Can I move up to the next level?

I started at $30 original bankroll, and I've been playing $0.60 9-man turbo SnG's this whole time (and the freerolls, but I never cash in those, since you gotta outlast 99% of the field). I'm up to $48 now.

Could I move up to $1.10 SnG's now? Seems like they give a better profit without having to pitch in more rake, and having played it few, it seems they actually have softer competition than the $0.60's. Not as many micro grinders, I guess?

How many of the .60's have you played?

I'd say if you're OK with the risk of losing your bankroll, or at least a chunk of it, then there's nothing stopping you moving up. You've got a bit over 40 buyins for the new level which is a little low for SnGs but isn't the end of the world either.

I agree with Logan move up but if you start loosing go back down to the games that you were winning at.

I would suggest you stick to good BRM.
Read the BRM post then decide.

At this point, consider those .60 games your base game. Every time over 5 of those games you show profit, allow your self, or gift yourself one shot at a bigger game, less than total profit you made over the 5 game stretch.

Be prepared to return to your base game still up overall.

It's not an all or nothing decision. $48 is enough BR to play $1.10, but you don't have to move up just because you have enough buyins. For example, you can take say $5.50 and play some 1.10 games to check out the level of the opponents and how (un)comfortable you feel.