I think there is some value to speaking in general terms about play at different levels, but I think we need to be careful in assuming that players will play tighter at higher levels and looser at lower levels. While there is little doubt that is true I think it is more important that we be able to identify the styles of the individual opponents we are playing against in each tournament. You are likely to run in maniacs if $5 or $10 tourneys, play with a table full of rocks, or a bunch of calling stations, so you better be ready to adapt your style to whoever else is at the table. Sure, there are more bad calls at low stakes, but if you find someone with maniacal tendencies at in a high limit game then a good player should be prepared to exploit that.
The bottom line is that I agree with the principle that you should be careful about your preconceived notions about play at a certain level and be prepared to employ the appropriate strategy for the players you find yourself against. Play at a level that is comfortable to build your bankroll, but don't leave holes in your game that could cost you in the long run.
The bottom line is that I agree with the principle that you should be careful about your preconceived notions about play at a certain level and be prepared to employ the appropriate strategy for the players you find yourself against. Play at a level that is comfortable to build your bankroll, but don't leave holes in your game that could cost you in the long run.