I had to pick Iskoort, just because their buildings are so freaking awesome. Yes, I realize I'd have to live with the residents, but after you got used to the annoying factor, the Iskoort race might almost be cool. I mean, a race that will trade anything for anything? If you had stuff they liked, you could get pretty much any odd random thing you wanted. And I happen to really like odd random things. Finally, they mentioned in #26 that the Iskoort world is a place that all the random alien races of the galaxy hang out, so I would get to meet all the other cool aliens.
Point is, Iskoort world = win. I would so live there. Right now. I wouldn't even wait for earth to go boom.