Lower Priced Monitors with 1:1 Pixel Mapping?

Hi,

I'm essentially looking for a monitor to serve as a tv. I've got a 22" Westinghouse monitor serving as both a monitor and my tv at the moment, but it lacks an hdmi port (so overscan is a problem via component).

I'm looking to spend a max of 500 dollars, but I'm not picky about things like color fidelity (within reason). I'm not sure whether I need a 1:1 mode or not. I intend to hook the monitor up to my PS3, 360, and HDTV box (I'll probably buy a switch). I looking to get something at least 24 inches. In fact, I was considering a 28 inch Hanns-G; I've seen it maligned on this board but thought it would serve my interests until I found some people talking about it stretching 1920x1080 to 1920x1200. I don't know whether they were connected by HDMI or component, though.

So to recap- Do I need to worry about stretching when connecting from a console or cable box via HDMI? Is so, what monitors within my price range can be recommended for my purposes?

Advance thanks for any responses!