I recently picked up a pristine T3n with the Hexanon 50/1.7 and a couple of other lenses for the bargain price of $39.99. The camera is in beautiful condition and the lenses are very nice too. I would like a nice walk-around zoom lens for the camera though, but I don't know which Hexanons are good zooms and which are not. I've been watching a couple of Hexanon 28-135/4 zooms on eBay, but I don't know what their reputation for performance is. Any suggestions or lenses to avoid? I'd appreciate any thoughts.