For either one, I'd suggest choosing a model that fits what you'll do most with it. Computer maximum resolutions can differ from monitor resolutions. While a hardcore gamer wouldn't think of purchasing an LN product because of the resolution standards in video games that may not be supported by their video card, most people would notice very little, if any, difference. The gap between computers and televisions are closing, but there are still some differences for some users.
The inputs are usually the deal breaker with many people, however, either panel can work in either application.
What is the difference between Samsung monitors with TV tuners, vs. plugging a computer into their TV?
I need a small (19"-22") PC monitor/TV. Samsung's LN22A650 catches my eye, as does the T220HD. Is there any difference other than the type/number of input/output options? (aside from aesthetics) Same question for T190HD vs. LN19Axxx