AMDīs cpus are faster and cheaper. If I were you I would get an Athlon XP and a good KT266A mb now or wait for the t-bred. I would probably wait for the t-bred.
a good review of the Athlon XP 1900+.
Intelīs cpus donīt suck but Athlon+DDR is a lot cheaper than P4+RDRAM. Whatever you do donīt buy a P4 with SDRAM, thatīs like putting a Porsche motor in a Trabant.