I play Ignition primarily, so far so good. I like the anonymous tables, so you don't have to carry the fish badge with you the rest of your life, after you improve from complete noob-cake.
Haven't done any withdrawals yet.
Software is a bit glitchy, but if you're playing from a computer it typically isn't too bad. I'd recommend using an incognito tab when playing mobile, as it's simple enough to clear your cookies when it starts to malfunction.
I also love the simplicity of their board layout. You don't get a million visual effects. Very spartan UI