I think the poll could use better options. Or maybe the poll question could be more specific.

For resolutions above 640x480, keep this in mind: The background layers (and sometimes foreground layers) in many levels won't look too good with higher resolutions since they weren't designed for this. In addition, if users are able to attain resolutions greater than 800x600, there's likely to be even more of a disparity in how levels are made.