I have tried a couple times to make use of the dungeon tiles, flip mats and similar tools. I find that I get frustrated because they too greatly restrict imagination. I'd like every encounter to be completely unique. Want a forest encounter? Dungeon tiles can give you a fine one. Want a forest encounter on the side of a hill next to a stream with two fallen trees lying across it and a truck-sized boulder nearby? Well, the best you can do is approximate it with the tiles.
OTOH, drawing it on a battle map is not nearly as pretty. So I can understand the appeal of something drawn by a professional artist.
Most effective for me is to take whatever map is printed in the module I'm running, scan it, resize it so that it's the same size as a battle map and print it out. Expensive, but it works well. It seems to be the best compromise.
:AMN: