HI
the pool is set to give you the diff you need on 3334 up to 2048, on the 3333 this on is for higher rigs e.g. 4GHs and up depending how the rig is set up.
best is try them both and see how the miner settles in, not all rig are the same
thanks
hey nicehash finally got back to me and they tested the pool and this is what they said.
As far as we understand, this pool is utilizing some custom vardiff system. So it is adjusting difficulty in accordance with it's internal algorithm, which is obviously not optimal, most importantly, it is not setting difficulty high enough (this causes shares overload). Any decent pool will allow you to set custom, per-worker difficulty. So all the pool operator needs to do is let you set custom difficulty per your pool worker. When you have this option you just set difficulty accordingly to NiceHash minimums and you'll be fine.
Dunno.. Maybe you could contact them. I use them daily on other coins and seems to work fine.