F 15. 64 bit versus 32 bit.

[Nat Gross]

Planning to install Fedora 15 on a new partition dual boot win 7.
Hardware AMD 1090 (6 core) with 8 gig ram.
Doing Java programming and plan to use KVM machines with Fedora as the host os.
Of course regular stuff on the web including videos, etc.

So, the question is. Is it still advisable to go 32 bit due to
stability (say Flash), or can I gain performance and have 99%
stability with 64 bit F 15?

Thank you all.
--nat