Well, I think I'm glad I decided to go with Debian. On my Mac I have VirtualBox set up and have a centOS 6.4 Final x86_64 and a Debian 6.0 x86_64 installed (same config values for both - 2 gig ram, 20 gig HD space) with default install setups. Both are running Percona and nginx with php-fpm. Installed test sites of xenForo on both to compare speeds and setup differences. So far I've noticed that the centOS takes a LOT longer to rebuild the templates than the Debian box does. It also seems slower to on the page loads (this could be due to it being run in VirtualBox but Debian doesn't suffer this problem). The main reason I had done this was to see if I wanted to convert my VPS from Debian 6.0 over to centOS - and if I did what the differences in the setup would be. Once I got back into the swing of RPM it wasn't bad, but I still think Debian/apt is easier to deal with than centOS/yum. Has anybody else that ran both noticed that centOS is slower in an actual VPS (don't really want to get another small VPS to test on but guess I could). Any suggestions on centOS for tweaks that need to be made? One thing I found is that (by default on my install) nginx in centOS did not have gzip enabled and Debian did. Turned gzip on in the nginx.conf and that sped the webpage views up some.