I would look at the Ati 9800se. This is a good card in it's own right. However there is also a 50/50 chance that you can run it as a full 9800 card, with just a small driver change.
Basically 9800se's are normal 9800 that did not quite make the scatch, so they disable 4 of the 8 rendering pipelines and sell them as 9800se's. However many of them (about 50%) will run fine with all 8 pipeline enabled - thus you have a chance of getting 9800 performance for 9800se prices.
Have a look here for more info.
http://softmod.ocfaq.com/http://softmod.ocfaq.com/
I personaly got a
Hercules 3D Prophet 9800SE All-in-Wonder 128MB DDR - Retail
from here (look near end of list)
http://www.overclockers.co.uk/acatal...ics_cards.html
A great card imo, plus you get TV card and video and full 'PVR' (personal video recorder - pause live tv etc) and remote control. The only thing it does not have is dual LCD screeb output (you can output to LCD or monitor and TV at same time but not to two LCD screens or Two monitors)
hth