asus M4A785-M cpu upgrade

alright seeing as i’m somewhat confused as to what to upgrade to (preferably QUAD). atm i have a aMD Athlon II X2 250
http://www.cpu-upgrade.com/mb-ASUS/M4A785-M.html
the list of all the supported CPU’s apprently.
Answer #1
Phenom II X4 965BE
old enough to be pretty cheap but new enough to be fast!
Answer #2
that was rather fast. thanks.