Well, I played 5/10 limit for a long time grinding out slightly more than a call center job, then found NL and was able to make plenty without playing anywhere near as many hours, and now the NL games are really tough. I think 1/2 is fish central, but it's getting tougher and 2/4 and up are pretty bad games. Not to say there aren't good games now and again, but generally if you're a good player, the other players will be doing similar stuff to you, and working to find places to exploit. So, I played a little 10/20 6m on stars yesterday and today because I was running poorly in NL games, and WOW!
Limit is booming. People are limping 68c UTG and probably not folding if it comes back capped. There are definitely a LOT more very weak and poor players in the midstakes limit games now than midstakes NLHE.
I expect these things to go in cycles. For instance, if all of the legal confusion in the US is finally put to bed, and depositing and withdrawing are made very easy again, I expect to see a lot more extremely weak NL players. For now, though, it looks like unless you want to play fewer tables and really put in effort to gain an edge on reasonably good competition, LHE is where the loose money and big winrates are.