RE: MAXCOIN
I had my maxcoin convert to DASH since that was the only one next to bitcoin and it never converted, just sat there on exchange. THen I set it to Bitcoin and it converted right away. Though the Bitcoin transmission fees are high for small transfers.
It would be nice if you could auto convert back out from bitcoin to another coin, I didn't see that.
I also like auto exchange turning on and off so I can build coins up and calculate my ROI. Plus for some reason I think transferring larger coin numbers gets you better conversions. I've seen the final coin conversion does take a few hours to settle off the exchange.
This is a great system and my numbers here are higher than other multipool exchanges.
RE: GRIDSEEDS
I have gridseed miners and they work fine, but the hash rate is so small I solo mine them for the lottery winning block find. I use nicehash solo mining lottery pool with CGMINER 4.3.5 which runs them at 888MHZ. it hits difficulty at 128 and 256 right off the start. I also have extremely low latency of only 30 mSec. to that pool. I never saw any returns but a few pennies per month with them pool mining. So, If I hit the lottery once in a year or two that is more than pool mining.