For what its worth, I saw two options in Costco the other day, and noticed that neither one had an anti-glare coating - and the glare was really distracting. That might be something to consider, depending on where the frame will be placed and what the ambient light is like.
I've got to say that I was really surprised at what the higher resolution frames (800x600 or 1024x768) cost, considering what a good 19" 1280x1024 LCD monitor costs these days. (Just like monitors, the 16:9 or other wide-format frames are cheaper because of the LCD glass substrate manufacturing benefits, but while that is an advantage for a computer monitor, photos are still shot in 4:3 format.)