I'm looking at a new system again, here's the specs

Athlon 64 4000+ (2.4GHz) Socket 939 OEM
DFI LANPARTY UT nF4 SLI-DR
1GB (2x512) OCZ PC3200 EL Platinum Rev 2 OCZ4001024ELDCPER2-K
Gainward PowerPack! Ultra/2400 PCX GeForce 6800GT, (256 M
Thermalright XP-120
Vantec Stealth 120mm
Maxtor MaXLine III (7b300s0) 300 GB Hard Drive
Dell UltraSharp 2005FPW 20" Widescreen LCD

my work subsidizes up to £2000 of computer purchases a year so I might as well make a dent in that. The LCD's are too expensive over here to get a nice 23" so I'll just settle for a 20". I'll set my current 15" LCD as a secondary monitor and eventually hook it up to an mac mini and use Synergy to control it from my PC with the same mouse and keyboard so that it operates as a secondary montior on a second system. You can even stop it from moving over to the other desktop by using the scroll lock key. Its still under developement too so they'll be adding support for more than two controllable systems.

I'm off to the London Geek Dinner tomorrow night which should be some really cool chats with some of the heavyweights out there.