I'm looking to get a new 21" monitor to replace the aging 17" one I have. I run my 17" at 12x10 resolution, and figure I will probably run the 21" at 16x12, maybe bigger, so I'd want the 21" to be able to do at least 85hz at 16x12. I know the Sony G520 can do 16x12 at 100hz, but I'm wary of...