Mac Pro 3.0 or 3.2 (sorry if this has been asked)

Hi,
I'm kina new to Dual 8 core stuff. However, I have an urgent need to buy an new fast Mac (this coming week). I want to build this thing so that it is great at running After Effects (CS3). However, I think my main question is really between the 3.0 and 3.2 Ghz flavors... Would the .2 difference be that noticable? Or, is it more for "braggin rights"? Are there any posted speet test between these two? Bottom line...and I know this is a subjective question but is it worth the extra $800?

Any thoughts, comments or advice are greatly appreciated.

Thanks,
Rob



p.s. -I'm sorry if this sort of question has been posted before. I've been searching for about 45mins and I only found where someone else asked this question within another post and never received an answer.