I thought Party Poker was supposed to be one of the softer sites on the net for ring games. So, after a I won a MTT at UB, I took $500 of the winnings and moved it over to Party Poker. I got a 20% deposit bonus which cleared after 700 hands.
At the end of the first 700 hands, I was up to about $800 on deposit with the site, playing mostly $25 or $50 NL ring games. I then ran into some bad cards, but nothing out of the ordinary. My bankroll dropped to about $730, and I took a break from the site. I returned last week, played a $50 NL ring game, doubled up, and haven't been back since.
The bottom line for me is that I think that the competition at the .25/.50 NL games is softer than those that I was playing at
Pokerstars, and I have no reason to question the integrity of the games. I'd play at Party more often, but I don't particularly care for the software.