[gergery]

I think there is plenty of bad play at 5-10 and 10-20 tables, where i'm currently playing. But i was mainly playing 2-4 and 3-6 very recently.

The standards get very gradually better, with tighter, more aggressive players, fewer calling stations. But I think the main driver is your bankroll, as there are still 1-3 fishy/semi-fishy players in my typical 10-20 game.

If I were you, I'd aggressively move up as soon as you feel you can beat the game you're at (and i'd hav a low threshold here) and you have the bankroll. You can always move back down, as I have had to do on occasion.