seen and touched either or both of them? If not, do so and then decide if you have to move up to 24" given the budget you have.
I was considering purchasing a new monitor to replace my current one (HP vs17). I have a 17" monitor with a VGA port and wanted a 24" monitor with digital support. Now I think I've narrowed it down to two and want to make sure I buy the better one (as both in the $300 range is relatively expensive for this college student).
1) Sceptre x24wg-Naga 24" Widescreen
2ms response time
4000:1 contrast ratio
DVI & VGA
16.7 million colors
300 cd/m^2 Brightness