Buttercup said:I have Tome & Blood, but I bought Complete Arcane anyway. Frankly, it was probably not worth the money for me, because everything I can use I already had from the 3.0 splatbook.
However, if you don't already own Tome & Blood, and if you want some interesting prestige classes and new spells for magic users, then I'd say the book is a reasonable investment.
(Or if you're a D20 addict like me.)
Given that I'm not that impressed with the prestige class constructions in the 3e books, I think the adjustments in the 3.5e complete series are a great improvement. There are still improvements to be made, of course.

Cheers!