Im no veteran, but I cant fault Pokerstars
I havent played many hands, maybe 5k in the 5-6 weeks since i started playing micro cash on stars, but Ive seen my tiny bankroll double. I realise I am outmatched by quite a few players at the tables, but Ive still enjoyed some success.
Same for the micro tourneys. Ive been very lucky and had some success (regular cashes) over the last month, simply by playing a tighter, more aggressive style.
Bankroll managment has had ALOT to do with it also. I stopped playing the $8 and $11 tourneys and limited myself to a max of $5 a tourney.
This has been easier on my bankroll, and for a change, I feel I'M outplaying people.
Maybe your just playing outside your bankroll/skill level dude.