I am also working on becoming a better all-around player, and the 11s are not bad for this. Poker is about adapting to different situations, and making decisions that will be most profitable for you. That said, low limit SNGs can only teach you so much about poker. I currently use a system that was inspired by Curtains.

http://www.livejournal.com/users/curtainspoker/

Using a system similar to his Oct 16 entry, I play 60%SNGS, (back at the 22s after moving down after a downswing), and split the remaining 40% between cash games in LHE, NLHE, PLO, O8/b, Stud, and Stud8/b. This helps avoid burning out after the repetitiveness of multi-tabling SNGs, and improves my all around poker game. I think using a system like this creates a happy medium between making maximum profit, and challenging yourself and keeping poker interesting. Also, as you improve at cash games, they can become much more lucrative than SNGs, though they involve much more variance. Good luck for your poker future, as long as you don't suck out on me.....