Someone on another site described the 17" display on the iMac as being on the low-end, only displaying 262K colors, having bad viewing angles, blurring and the backlight that bleeds heavily from all sides. Is this true or is it an isolated problem? If so, is the 20" a lot better? I'm asking because I have never heard this before and out of all my experiences using the 17" iMac in stores, it looks very nice and not much different than the 20", other than size. Plus, I don't have enough money for a 20" iMac.