Hi, I'm not pretty sure but a 60% ROI is not possible at MTTs and SNGs low stakes. It is way too high and 350 games for MTTs and SNGs is a very small sample, so I think you shouldn't consider playing higher stakes because of that. In 350 MTTs you could have made some top cashes in tournaments that would make a significant standard deviation of your true ROI. I am not an expert but I rember reading an article from a pro that a decent sample for SNGs was about 10k sits. I'm not saying that you are not ready for higher stakes but you could think you are due to short term variance