This depends on you syle, tight play generaly works best on loose aggressive tables, and vice versa. Just remember that if a table has a high flop % dosent mean there are no rocks out there. Poker Tracker and a HUD (like PokeACE) will help weed these out for you.

Oh yes, an buy TOP, although it's mainly for limit and all the razz examples get a bit confusing. However the solid stratergies and, more importantly, the reasoning behind those stratergies can be applied to NL and will really help you get a better understanding of the game.