I upgraded to a LCD from a CRT about 6 months ago, the first weeks were a pain in the ass, the low refresh rate and 6 ms of latency of my IPS panel, the last is what really still annoys me, I hate the damn blur you get in first person shooters or when trying to read a scrolling text, the least of your worries are the aspect ratio, new monitors have an option to put black bars on the sides so the image won't stretch in fixed 4:3 aspect ratio.