Yeah memory is definitely next on my list, the only question was whether to get an ssd as well.
incidentally I'v heard that the effect memory speed has on max is marginal.
After that I'll be jumping the amd ship in favour of intel. Either the 3770K or I'm tempted by the 3930 (but I've only just bought a Noctua d14 which won't fit a 2011). So I might just wait to see what the nextset of intel hex core look like.