Which card to upgrade to, if any?

The 7800 GS is the best out of those three, but for the same price I bet you could get a PCI-E board and a 7600GT, which would preform close to the 7800GS.

New mobo is not an option, pins will fall off cpu if I take the heatsink off, they got bent pretty bad last time round.

Lol! ouch man....well then i suggest the 7800gs. But your current card is fine. Concentrate on saving for a new system, but yea if you dont want to then get the 7800gs.

Ouch on the prices dude, i payed £10 more for a 7900gto. I would really consider just buying a new system.

I am not familiar with the UK pricing on said cards, but the best you can get would be the AGP X1950 Pro:
http://www.overclockers.co.uk/showpr...odid=GX-004-GC
£187.99 inc VAT

Otherwise, the 7800GS is decent.

i say wait as well. agp upgrades are too expensive now and the 7600gs might even be a step down.