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Raxacoricofallapatorius

Home of the Slitheen, the big fat green farting aliens that everyone hates.
Sister planet of Colm, mentioned in the last planet vote.
Notable quote from the wiki, referring to a plot from one of the comics:
http://tardis.wikia.com/wiki/RaxacoricofallapatoriusIn an alternate timeline in which the Cybermen conquered the Borg, Raxacoricofallapatorius was among the many worlds the Cybermen conquered, the natives all cyber-converted.
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Red Rocket Rising

This planet is from one of the audio episodes called (innocently enough) Blood of the Daleks.Red Rocket Rising was a planet colonised by humans.
The planet itself was much like Earth, but with multiple suns. The people living there had almost no records of the outside universe.
One day, a Dalek ship crashed into the planet, and some scientist (Professor Martez) guessed that the Daleks must be the future of humanity. He began working on creating Daleks out of humans both living and dead. While he was doing these experiments, he figured he'd contact the real Daleks, assuming they'd love his new plan, but when they heard of it, they basically freaked out and sent an asteroid hurtling into the planet, with the intent to kill all inhabitants. Some of the humans tried to escape, but the Daleks just exploded their ship. Then they came down to exterminate the ones who stayed behind. There was a big battle between the humans, the mutants, and the Daleks. Somehow all the Daleks (mutant and original) were destroyed.
Reminds me of Dalek Sec's story. Doesn't sound like a fun place to be.
http://tardis.wikia.com/wiki/Red_Rocket_Rising
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Rexel IV

The wiki doesn't mention much about this planet, other than that it is the home of the Carrionites. These were the "witches" that "ensnared male victims" in Tennant's Shakespeare episode (The Shakespeare Code). They pretty much had all the powers one would expect a witch to have, but the show explains it all as being more science-y rather than witchcraft-y. Basically, they used the power of words to mathematically manipulate the universe.
Long ago, their entire species was banished into the Deep Darkness because of a violent war they were waging against another species.
Eventually, Shakespeare came along, and his words were so powerful that he accidentally and unknowingly let three of them out of the Deep Darkness. The three Carrionites then manipulated Shakespeare into hypnotically changing the last lines of his play into some words that would let the rest of their species out of the Darkness. The Doctor, Shakespeare, and Martha stopped the play before anything terrible could happen. The three escaped Carrionites now live trapped in a hidden crystal ball in the TARDIS.
http://tardis.wikia.com/wiki/Rexel_IV
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Riftan 5

It was also the birthplace of Gustave Lytton, who has quite an interesting story when it comes to his interactions with the Daleks and Cybermen. When the Doctor first met Lytton, he was working as a paid mercenary for the Daleks. When Davros started a fight with the Dalek Supreme, Lytton and a few of his men were among the handful of people who were able to flee for safety.Riften 5 was a satellite of Vita 15. On Riften 5, the Fifth Doctor visited the vid-archives and saw genetic tests that were run on Daleks after the War of Sharpened Hearts.
Later, Lytton joined the cause of the Cryons, helping to defend them against the Cybermen. He wanted to go to London to pretend to befriend the Cybermen, planning to betray them later. When the Doctor met him again, he immediately disliked Lytton because of their previous encounter with the Daleks, but soon, both the Doctor and Lytton were being captured by the Cybermen and it became clear that Lytton was on the Doctor's side.
When the Cyber-Controler learned of Lytton's plans of betrayal, he ordered him to be converted into a Cyberman. Lytton died fighting the Cyber-Controler as the Doctor was trying to save him from this conversion (pictured).
This planet also doesn't have any pubs, apparently, so if you like drinking, maybe it's not the planet for you.
http://tardis.wikia.com/wiki/Riften_5
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Commentary/TL;DR
Raxacoricofallapatorius sounds potentially pro-Cyberman. At the very least, it will have gross, fat, farting green things.
Red Rocket Rising sounds like it's very likely to be Dalek-related.
Rexel 4 is the only planet that doesn't seem to have any obvious Cyberman or Dalek connections. But there are witches there.
If going off of the Lytton connection, Riften 5 sounds like it could be pro-Dalek, anti-Cyberman. I expect it could be something like we'll meet Lytton, and he'll be like "if you lynch a baddie, I'll help you against the Cybermen, but if you lynch a civ, I'll join the Daleks and do something bad."
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Right now, I'm going to vote for Raxacoricofallapatorious because the Cyberman connection there is pretty vague, coming from an alternate universe from a comic. I imagine the green things shouldn't be too hard to battle, considering their biggest weakness is that if they touch vinegar they explode into goo.
Rexel IV would be my next choice, if someone can convince me to switch over to that. The lack of any baddie connection sounds appealing, but the witches do not.
I also find it strange that keys was so quick to jump on board RRR with it's obviously Dalek-heavy connotations. I'll give him the benefit of the doubt for now, but I would like to hear an explanation if he has one.
Hope this helps, and as always, feel free to add any info I might've missed. (I'm sure I don't need to tell you guys that, though.)
