Hi, I have a chance to buy one of those lenses. Please help me decide... I'd like to hear comparissons of these two lenses: size + weight, optical performance (sharpness, contrast, flare), handling... I already own Zuiko 135/3.5 and 200/4, but I'd like to have a zoom in this range instead of primes. My 135 has terribly low contrast so I can't use it for slides (it looks odd in the slideshow of nice contrasty images), and I don't carry the 200 because I rarely use it. I'd like to use the tele-zoom instead of the 135, with an added bonus of the long end at 200 without more weight. If the zoom will be good enough, I might also leave Zuiko 85/2 at home... The Zuiko obviously will be more expensive at about 130 USD while I can have the Tokina for 70 USD. So what do you have to say about these two lenses?