Hi, I'm pretty sure this has been discussed somewhere in this forum but for the life of me, I can't find the thread... I currently have the GH2 with the 14-42mm kit lens and was just wondering... what's the difference between this kit lens with the older 14-45mm lens (other than the obvious, i.e., slightly longer zoom, external on/off O.I.S. switch, etc)? Which lens has the better IQ? Thanks in advance!