Console forever! :D
I've been playing since version 0.9.9.1 and I've always used the console version. I tried the tiles version for a bit to test it when it first came out, but switched back to console for a variety of reasons:
Firstly, it made my computer stutter from time to time; the animation wasn't smooth and it made the game frustrating to play. Of course, that was on an earlier version on a crappier computer, (I've upgraded my system since then) so that might no longer be the case; I admit I haven't tried tiles in a while.
Secondly, I like being able to see the whole screen at once; having to scroll around is off-putting.
Thirdly, I find the contrast of having a black screen easier on my eyes and makes it easier to spot important things. (Like dangerous enemies that popped into view)
Fourthly, well, it just doesn't feel like a Roguelike any more if I play with tiles; I like the old school kind of look. :)
The biggest drawback to using the console version is being unable to use the mouse because the mouse makes corner-shooting SOOO much easier. If you want to corner-shoot at the same spot repeatedly with the mouse, you can just point at the square and click on it as many times as you want. To do the same with console, you have to hammer the arrow keys a half dozen times for every single shot. (It would help if the console version just remembered the last square you shot at and then targeted that square again, but I digress) Other than that, there's nothing I really miss about the tiles version.