What is better to install for Core duos & FC6 either i686 or x86_64?

[Thomas Fischer]

Hello all,

I would like a frank opinion and what are the plus or minus of
installing either the i686 version or x86_64 version of FC6 on an Intel
Core (or Core2) Duo platform?
I've read different articles that say that using the x86_64 version
comes with a fair bit of downsides including lack of support for lots of
software...

I plan to use this installation as a Desktop machine for every day work.

Thanks for your inputs...