I've been seeing these become more and more affordable on KEH and eBay lately...Is this lens useful for anything? I hear good things about it, then I hear about how crappy it is, how NOT sharp it is, how the VR isn't that great. Do any of these facts hold true? I'd love to get one of these if the price were right to shoot bike Trials with. I've been constantly swtiching back and forth between my 18-70 and 70-210, but staying in the middle of the 18-70 and on the shorter end of the 70-210... So the 24-120 would fit the bill perfectly, but I wouldn't want to get something that isn't going to be up to par being used wide open.