I currently own a Pentax K-3 and Q7 with a couple of very nice lenses for both. Both cameras have worked well for me. I use my K-3 for nearly everything from special events to walk-arounds to camera-scanning my film negatives. With the FA Limited primes in one hand and a DA 18-135mm in the other I am well equipped to handle the scene. The Q7 works well as a travel or vacation camera due to its size. I can pack all of my tiny lenses in a small sling bag and go to town. I am more than thrilled with my K-3 and it is a like monument in my photography. The FA Limited lenses are legendary in my mind and they make up for whatever shortcomings the system has a whole. Unfortunately, the Q7 leaves me wanting more. The Q7 is extremely fun to shoot and the IQ of the lenses with the tiny 1/1.7" sensor is very nice. However, I sometimes itch for a viewfinder and a faster response to button presses and dial actuations. It's not a show stopper but definitely a show "slowing-downer" if that makes sense. The M-10 is on sale now for $500 with a kit lens and I am starting to consider it to replace or compliment my Q7. My initial research shows that the M-10 as whole is closer to my K-3 than it is to my Q7 and I wonder if the two cameras will overlap each other too much. If they do then I would probably find myself not using the M-10 as much as I would have thought I would. My ideal lens kit would consist of a normal prime (40mm to 50mm in FF speak), a general purpose zoom, a WA zoom, and a tele-zoom. Four lenses and I'm happy. No LBA here. I'm afraid again that the lenses would start approaching dimensions of my K-mount lenses and I would have two competing systems. Obviously I have lots of research to do. I'd like to ask the forum here for their insight and opinions as part of this research. Thanks!