x86_64 Vs. i386

[Jeffrey Ross]

Ok, now that FC7 is about to be released shortly I am going to upgrade 
from FC6 X86_64 to FC7.  My question is, is it worth going with the 
x64_86 version?  Although I never tried the i386 version on this 
hardware I found that I had a lot of grief with internet plugins on the 
64 bit architecture and noticed that everything seemed to treat the 
hardware as a dual processor machine (eg no single process would take 
more than 50% of the total CPU).

So what's the advantage of using the 64 bit OS anything?  I don't run 
that many CPU intensive applications, my use consists of the vast 
majority of use being internet browsing, email, word processing.

Right now I'm leaning towards the i386 version, any reason not to?
suggestions, comments?

TIA Jeff