The P4S 333 (no suffixes) is the best board to get since it has onboard C-Media (I have 2 of them)
It offers excellent price/performance. This model comes also with LAN and w/out LAN.
DDR voltage adjustments using on board jumpers (2.5/2.7/3.9)
Soft Bios for FSB adjustments
BIOS core voltage adjustments (1.5 to 1.7) - no wire trick necessary
Ability to run PC2100 DDR at 1:1 FSB when at 133 FSB and higher
Voice activated BIOS to let you know all is well,
Some other great features that may come in handy in future:
USB 2.0, Smart card reader, SD and MS connectors for Secure Digital memory card and Memory Stick for fast and secure downloading of all types of digital files such as music, photos, movies, videos etc.
Excellent board and features for the price
Both of my boards hit 2.2G using Intel NW1.6A easily at 1.55v.
Sheesh I sound like an Asus/Sis salesman but the 2 boards I have are really great period.