I am currently testing it. So far I have a good impression.

Only complaint I have are the relatively high maintenance fees. Yesterday it was something between 7% and 8% of the payout. Today after the difficulty increase it is more than 10%.

Are you guys sure the maintenance fees are calculated correctly?

You state on your page that you are using the latest ASICs from Gridseed. Why are you then calculating with 0.16093 watt per KHS? That would mean one Gridseed unit with 300 KHS consumes 48 watt, which shouldn't be the case when hashing in pure scrypt mode.