<< well they have to be katmai's because you cant dual the p3 coppermines. i'd take the xeons either way >>
Uhhhh....no 🙂
It is "Celermines" aka Celeron2's that are not able to do dual processing, P3's can do SMP just fine. That is one of the big advantages P3's have over Athlons for right now until the 760MP chipset is widely available and DDR prices drop some.
Anyway, it depends on what you do. For servers or other applications that rely heavily on cache I would go for the PII's if they have 1mb+ of cache. For just about anything else, a P3 of higher mhz rating will perform better.