Although not the fastest P4 board (SIS and VIA are faster), I like the stability of the Intel 845D chipset. It's well underrated by Intel and can be pushed quite hard if you like. I'm using a P4 1.9 (best bang for the buck awhile back). I'm sure the new P4 2.2's would be even better with the optimization, but for a price.
I'm running the ASUS p4b266 mb.
(used to be an Cyrix, AMD, VIA, SIS man........now I'm back to Intel)