So I've been testing out the Olympus E-M10 for several months now and quite like it for some uses, particularly street and architecture. I currently only have the 14-42 3.5-5.6RII but would like to get a longer zoom for street photography. I feel I would like to keep a wide angle to avoid switching lenses often so I've been looking to some of the 14-140 and 14-150 options. I am looking at Panasonic : LUMIX G VARIO 14-140mm F3.5-5.6 ASPH. POWER O.I.S. Tamron : 14-150mm F/3.5-5.8 OLYMPUS : M.ZUIKO DIGITAL ED 14-150mm F4.0-5.6 M.ZUIKO DIGITAL ED 14-150mm F4.0-5.6 II I think that's of them in this range. I am on quite the budget (and don't think I can sell the 14-42 for much at all) and I believe the original MZ 14-150 is the easiest to find cheap. I know the newer version has a better build but anything else? I like that the Panasonic and Tamron have 3.5 at the wide end but .5 isn't too much of a difference.