i am thinking the same thing, i just got a 15'' TFT screen, pretty good as well with a 25ms response time i dont notice any of the blurring any more as my eyes have got used to it,i love it!
i think it will be worth getting a geforce 4 with a TFt monitor as when games like unreal tournament 2003 comes out which is pretty soon you wont be able to get good frame rates at higher resolutions anyway, i say get one, a geforce 4 will probably be better with UT2003 but you can pick up a radeon 8500 for under 100 dollars nowadays on the forums