Fedora 10 vs Mandriva 9

I am going to try dual booting with another distro in addition to linpus and despite using k/ubuntu on my other pcs I fancy trying either fedora 10 or mandriva as they both get good reviews here and sound like they work well with the aao with minimal tweaking.

I was wondering if anyone who has used both could give feedback on their relative pros and cons? I have never used fedora and the last time I tried mandriva was about 6-7 years ago so I really have no experience of either distro.

thanks