Lower refresh rates? As compared to what?
And how good it looks is going to depend on how good the TV is.
I have a high end tv in my living room a sony, and compared to monitors
monitors are built for pc, ive hooked up my pc to my tv and it doesnt look as good
on the other hand my plasma in my room does work a lil bit better but its no where near as clean looking as my pc monitors
also never EVER buy your electronics from walmart they are made from junky electronics