Alright people.
Well, I've bought a card, and you may be suprised as to what I have gone for.
I bought a Radeon 9500 Pro (built by ATI), fully retail boxed with all it's goodies for $76.00 (£41).
My reasons?:
1) I took DenisF's advice on the bottlenecks my machine will produce trying to run high-end cards (even with 256Mb RAM, as I take it this extra memory won't make a difference on my mid-range machine), and that I should avoid the high-end cards as shelling out the wads of dosh for these cards will not give me the performance gains you guys with high-end machines will be getting.
2) I took gdonovan's advice on the pipeline architecture making all the difference in terms of performance, rather than video memory. I have also seen the benchmarks between the 9500 Pro Vs. the 9600 Pro/XT, and the 9500 leaves them both standing!
3) I took my mate, paulpsomiadis' advice, as he is a hardcore modding maniac
and he already has the experience with the 9500/9700 series. He knows his stuff, so I trust his judgement completely.
This card is a good all-round card and is ideal for me. I get some great performance from the card with it's 8 pipeline architecture, won't suffer as many performance bottlenecks as I would with say, something like a 9800 Pro, and the card was good value for money IMHO.
Let me know what you think guys on my purchase, and if I have made a decent choice or not?