Ease of use.
Stability.
Low fees.
Responsive operators (and if they have a cool Avatar like DrHaribo that's a bonus).
Merged mining.
Remote monitoring and ability to restart from anywhere.
Automatic payout.
I like a clean looking GUI with tweak-able settings that have pop up directions.
Just a few
Sounds like the things I also want.I want to be able to use merged mining with my Ant miner ASIC so I can get coins from different currencies with same hashrate.I also want those other coins to be automatically converted into BTC for me like Ozcoin used to do for me,so I can actually get a decent return with the hashrate I've got.