I'm kinda oldschool player who had pretty good success on nl400-nl600 years ago when coaching sites just started to get publicity and games were soft w/o balance. Honestly I feel I have dropped out especially during spent some lazy years out from 6max games.
I feel nl100 can be pretty damn competitive nowadays especially with high rake systems sites have.
Playing on Party's fastforward nl100 now. I am not sure how competitive it is compared to other sites but I guess it's softer than Pokerstars' zoom. It's frustrating to just grind 100k hands break even or even little bit losing game.

After watching most 6max videos in your site I feel it might be necessary to start use tools even in SSNL. Everyone using here those tools? I mean Piosolver, CRev etc... I find them complex and hard to start with at the first glance. Which route would u recommend? Which application might be best option to buy? I tried Pokersnowie a bit with a free trial but I am not sure is it a real deal even for a lazy person or is there better one for presenting my leaks? At least it's as easy as one can be. Still, I didn't kinda trust enought for the information PokerSnowie gave since it's such a vacuum gto environment. Then there are at least PioSolver and some other tools.