Had a 7900GT in my old PC but had to use the card somewhere else. Not wanting to spend loadsamoney, ideally £100 mark would be good. Won't really be used an awful lot to play games on maybe the odd one. Will be displayed on my 40" Sony TV though so if it has HDMI out it would be a plus. I have a slight lenience toward NVIDIA, but won't just write ATI off.
Oh also will be doing image editing, not that its totally graphics card dependant. Mainly Lightroom and Photochop.