Considering LCD monitor on X1900XTX

Okay, so I'm thinking of going LCD but I'm left wondering what resolution I should opt for? 1280x1024 vs {EDIT}1680x1050{EDIT}

The problem being game performance - seeing that LCD runs in native res, I dunno if going for {EDIT} 1680x1050 {EDIT} will be like shooting myself in the foot for possible future gaming titles.

My gaming goes from low level graphics requirements, right through to the most demanding I can get, and frankly i do not like playing games with low in game options - so I'd rather sacrifice AA and AF.

Can someone with either of these types of LCD's tell me more about gaming performance at either the resolutions, and maybe advise me on my current situation?

I intend on upgrading to R600 in the not too distant future.

Current spec:
E6600 @ 2.4
2048mb RAM DDR2
Asus P5B Deluxe
X1900XTX

I have a 1900 xtx on a 1920x1200 monitor and it's a little slow in Oblivion. When I first got my computer I hooked it up too a 720p TV via DVI and that was much better at least for Oblivion. NWN2 is a little slow too. But it really doesn't look too bad if I run it at a lower res. Still I'm planning on getting an R600 when they come out. Games usually look okay if you can find a res that divides well into the native res 3/4s usually works well.

Mate, if the question is whether or not to buy an LCD over a CRT then this is my last post, because frankly, screw CRT, LCD is the only way forward, regardless of resolutions etc.

1680x1050 is a better res and will therefore give you better graphics. and will last longer before upgrading is needed.