Hi guys, 

I used to play 30s and 60s hypers a couple years ago with decent roi (3-4). Lately I feel like playing HU SNG again and I have few questions.

1. what roi would be considered decent at 30 and 60 hypers these days?

2. Has a lot changed in husng theory (for example is the theory from merc ebook times still valid)? Is the game played differently now? And what videos should I watch to catch up with today games.

3. Basically, is it worth coming back? I've heard some people saying bad things about cartels etc, that the game is barely beatable now. What do you think is the better choice between HT husngs and spins today.

Thanks

and sorry if these questions seem dumb to you