TA.
TTPretty much all of my achievement hunting has been done on the 360, this generation (note: it's still *this* generation to me, okay?), but the missus got me a PS3 about this time last year, so most of my gaming is done on there. I still don't really like the whole trophy thing (especially when just checking them on the console can take forever), so even though I've racked up thousands of hours on it, my ratio is dreadful.
With Steam I have so many games that I've barely touched that achievement hunting has been hard work. I've done it on a few games (Game Corp DX, Football Manager, Skyward Collapse etc), but generally haven't been very interested. Truth be told, I've been gagging for a TSA so that I could recapture my 360 form on Steam!