loved it originally. then I started shooting with it.
feels simply terrible. when mated to my 60D, it makes me yearn for my hasselblad. as dustin hoffman was told in The Graduate - one word - Plastics.
then one day, at a gig, the AF just quit. actually, it still made LOTS of noise, it just quit focusing. not nice. especially when I was counting on it.
lens was babied - until it just crapped out. so, it's off to Canon - for repairs.
hopefully you get a better copy than mine.
... to be continued?