I cant go into great depth Franky as i'm busy at work (LOL!), but i've played at 9 - here's a brief rundown.
Noble, Titan & Betfred. All on same ipoker network. Betfred has best tournaments and support, but Noble and Titan have the weaker players so I tend to play there more. Noble and Titan's bonuses are really hard to clear (especially Titans). Betfred's is a bit easier from memory, but it is all released in one go (i.e if you deposit $100, you'll only get $100 after playing all required hands, not in $10 increments). They've also got big freeroll at end of month if you play enough hands, with a big bounty for knocking out Stephen Hendry. Good access to hand histories for all 3, but MAJOR drawback is the persistant server problems. My connection has improved recently after I bought new leads, but the sites repeatedly crash (usually at business end of MTT's), which has cost me lots of dough. Of course Titan is home of Saturday's CC game.
Paradise and Party you know about - I think i'm the only person on site who likes Paradise! - the cards seem to run for me there.
are both Prima skins - very dull interface. I'd choose Bet365 out of 2, as they've got huge freeroll on Saturdays, and a very easy to clear monthly bonus. Wouldn't particulary recommend either though, though Bet365 you can withdraw to debit/credit cards, and switch funds to their betting site.
Carribean Sun Poker - nonetity site with impossible bonus.
Full Tilt - interface can only be described as "unique" (I hate it!). Players are supposed to be good, but i've won most games I played so I don't know about that! Easy to use hand histories.
Pokerstars - again you know about this one. I don't like interface (have problem getting correct bet amount, and seeing who has called /folded etc). I've only played 3 or 4 hours, but is seems the underdog wins a HELL of a lot of all-in confrontations. Good variaty of SnG's though.
Well that's 10, not 9. Personally, if those ****wits at Neteller
hadn't ****ed up my account for the fiftieth time I would try Expekt or whatever it is called that Poo Poo (can't believe I just typed that!) was talking about to see if $100 for 100 raked hands is correct. After that, I'd try Titan so go can play in site games (though ignore bonus)- if you get on well switch to Betfred, and give Paradise another go.