ASUS or EVGA GTS250

The first ASUS has VGA, DVI and HDMI output
The second ASUS has two DVI and HDMI output
The EVGA has two DVI and a svideo output

Base your choice on which connection your gonna be using for your monitor, personally id go with the first asus one for pure range of outputs depends on what i need for my display
 
The chipset is the same so you'll get basically the same performance +/- a small %.

I would opt for an EVGA card for it's lifetime warranty and the step-up program. That way, even if you pay a little more for the card up front, you'll have the option to upgrade via the step-up program. Also, lifetime warranty vs 3 years..... no brainer.