A month ago I replaced my lost PM2 with another PM2. I decided that the PL7's 3-axis IBIS, ISO 100, and flippy screen wouldn't be worth its extra size and weight. Price was a part of it, but I need to realize that with an item I cherish like a camera, $250 vs $500 is not going to be noticed in the long run. But I recently learned on DPreview some new info about shutter shock and electronic first curtains that makes me realize I might have been better off upgrading. IBIS - lets get this out of the way: 2-axis IBIS on the PM2 ruins images when it's on, so I keep it off. 3-axis on the PL7, does not ruin images. So, let's just say the PL7 has a 2-3 STOP low-light advantage over the PM2. Electronic First Curtain - The PL7 has this and I think it might eliminate a lot of the shutter shock I'm experiencing with the PM2 with longer lenses. So, with the PL7 I wouldn't have to crank the ISO as much. In fact, this is probably a TWO STOP advantage due to the PM2's shutter shock problems. So, is it safe to say that in certain situations at certain speeds, the PL7 is 4-5 stops better than the PM2? If that's the case in practice, I'd be willing to get the thicker camera and extra 100 grams. Then there's the GM1, since the PM2 is going to have IBIS off anyway and since the GM1 with its electronic shutter has no shutter shock to speak of, in low-light situations, the GM1 is 2 stops better than the PM2!? The 1/16000 is also a benefit. So, I went through this a month ago, but here I go again with new ideas.