I don't have either camera but from what I've read, the M100 is just not worth the extra coin. It is more MP but honestly, most computers can't handle anything more than 3-4 mp. I believe the software update is to correct the problem you mention. These look like interesting units, ones I'd be interested in, but I always like to wait until a camera has sold enough units to see what problems guys are having. Usually in the second year the manufacturer works out the bugs.

Blessings......Pastorjim