Also, before blindly taking advice from these "Nicehash supporters" take a look at some of their post histories. User yerfei for example, almost every post he has made recently is in reply to similar threads where is one line answer is "You can start with NiceHash or Winminer", along with a link. Who's to say he is not an representative from Nicehash/Winminer promoting their product? It doesn't take much to make an account on this forum and level it up, so you need to research more than just the pools when relying on information found on here.
I'm not planning to blindly take advices haha, I'm actually looking for a clear visibility on the options I have (convenience/profit when mining etc.). But I take your point, you're right.
Nicehash is the best to play around with, get your GPUs benchmarks and really begin to understand how mining works. The problem will be if you are a small time miner and only have one GPU you may not receive payouts for weeks or months. If you lower the payment threshold or mine to their wallet you could be getting killed in fees.
I'll investigate more on NiceHash, but I feel like starting with a mining pool so I can control when I'll sell (and see where things will go

with a 6*1060 or 6*1070).