Well, relatively speaking as you improve you feel better types of opponents are actually fish, and you're probably correct.I mean, if you've made enough money from poker to sit at the $100s and you have a solid winrate at the levels below it, it's likely that you won't see a huge difference in skill from your average random opponent.I'll ask Mers to clarify in case he doesn't see this though.

It depends on how you approach things.If you opensit 100+ and practice pristine game selection, it's likely most of your opponents will be fish. It's also true that these fish will be better than $2 fish - all I meant by my statement is that most of your games will be against non-regs and in order to profit the most from poker, you should learn how to obliterate non-regs.

In my experience, the fish are not much different but the regs are much better and will defend their games by sitting you.