NiceHash is easy to use, but brings in less $$$ than other pools. There are several other pools that also convert to BTC.
You seem to have a nice rig. If you could earn 1.5 USD more per day at another pool, that's 35 USD per month extra. To me that's reason enough to check out other pools.
If you eventually know your hashrate for an algorithm, you can use my tool to compare pools:
http://pools.you-stupid-woman.com/My tool is in test phase but has proven to be pretty accurate..