So for those of you who use a walkaround zoom for a good number of your photographs (yeah, I know we're quite outnumbered by prime shooters in these parts!) and are particular about image quality, what are you shooting with? I ask because I'm currently reviewing results from a trip last month where the m.ZD 12-50/3.5-6.3 majorly failed to impress. My ZD 12-60/2.8-4.0 meanwhile is facing a $300 repair bill for the second time in 18 months which I'm disinclined to pay. I'm even beginning to entertain the notion of looking at other systems, if that gives a sense of how desperate I am!