mmmmmmm agree and disagree
Pokerstars is by far the best poker software available..
Doyle's on the other hand is nice, but their Random Number Generator Blows... their network is so saturated and they haven't upgrated their servers.. the worst bad beats I have ever seen.
PrimaPoker is excellent. The software is not that nice in appearance, but its a fair game, excellent tournaments, huge activity. They run Microgaming software, very reliable system. Careful, for prima, go to Bet365 or 32red.. the best ones, I used to play at poker time, but that cs dept. is just awful.
My fav place right now will be Titan Poker, it runs under Playtech's platform, excellent game experience.