I’ve been making sweet pixellated love to this site all day: http://be.imba.hu
It scores your gear and estimates where your gear would allow you to compete, instance-wise. Only works for 70’s. It sucks a tiny bit as it “penalizes” you for pvp specs, gear, and gems, but oh well. I still maintain that feral charge is a must-have for druid tanking or off-tanking.
Anyway, it’s amazing, and it is a nice reference to see at a glance which pieces you’ve forgotten to enchant. For me it was “oh yeah. I was grinding mats for that enchant.” Obviously I have some work to do, but since my guild is only working on SSC and TK, I’m actually right where I need to be, although improvements are not actively underway, since I have this sweet sweet instant gratification graph to compulsively compare.