ATI Radeon x1900AIW OR ATIRadeon x1800xt + a TV tuner ?

Hi, Im planning to build a new pc using some of my opd parts and new ram(2gigs), cpu (a 3.2 single or a 3.0 dualcore pentium), mobo(asus p5wd2-e premium), and gpu, i was wondering which is beter a ATI Radeon x1900AIW card or a ATI Radeon x1800xt with a separate ATI TV tuner card for pci? So far I have been using an AIW card and to be honest I never had any issues with my oldie radeon 7500 AIW, which im using at present.
.......Or maby I should wait till Vista comes out (2Q of 2007 ) and get one of the directx10 ati aiw that will come out then, will there be mutch of a difference ? I read some reviews in which the 1900aiw did surpas the 1800xt in some games by even 5 to 10 ftp's, and i like the fact that aiw are all in one card (not a video card and a separate tv tuner), Im was hoping that the build would last me atleast that 3 or 4 years without upgrading a thing, (just by comparison im using the ps which i have now with minor upgrades RAM and the mentioned gpu) since 2001 ...so it lasted me those 5 years without mutch problems, but since december last year i began to feal the "aging" of my pc.

Will it be worth building the pc with those components? or shoud i wait till the begining of 2007?

Thank You for any and all coments.