The problem with ETN is not to find a pool with low fees, but to find a pool that is up and running as close to 24/7 as possible. It looks like larger pools get DDoS'ed on a regular basis and miners lose more because of them being down than from mining fees. I'd say stay away from suprnova, there might be something wrong with their configuration cause even if they're up most of the time they're finding too few blocks for their total hashrate (I got at least 25-30% less from them than I should be getting). I tried mining on hashparty pools, and they used to work fine but have been down a lot lately. Right now I'm mining on http://electroneum.ovh/ and it seems ok.