Which iPoker Skin Should I Choose?

[phishstiiix]

I am transitioning from playing sngs on Party to cashgames. I am sick of dealing with Party and hear that iPoker is softer competition. I have a few noob questions.

Does it matter what iPoker skin I choose?
i.e. do they all share the same player base?
What are my chances of getting iPoker rakeback?
Does iPoker allow datamining?
Any other comments on iPoker software?

If it matters, I am going to play from 50NL and work my way up. I am an experienced Party $22-$55 sng 12-tabler but have a lot to learn about cash game intricacies before I dive right in. Eventually I will be playing close to full-time at much higher stakes, but I have no timeframe on this. If anyone can help me out with any rakeback suggestions that would be much appreciated.