Not sure if you saw my two earlier posts in this thread, but I just got the G4 and couldn't be happier. It's essentially the V10's little brother with much the same power under the hood. The G4 is larger than the M8, which was a big concern for me. I preferred a smaller footprint like the M8, but it seems all the flagship phones with the options I wanted (sd card support, LCD, IR blaster, OIS, etc) were going to be big. I was pleasantly surprised at how well the G4 has worked out. It has all the features of the M line and then some. I don't even miss the stereo speakers as much as I thought. It fits easily in my pocket, and possibly better than the M8 did (without a case, that is), and has some nice home touch button customizations to help with one handed operation. Namely a button to activate the notification shade pull down to see your notices.
Seriously, check the G4 out. It seems like options are limited for the specs we seem to want. I conceded that I'd have to sacrifice size for performance/options, but it's worked out well for me. I think the rear power and volume buttons are a little awkward, but that's about it.
And the fact you can currently get $600 in rebates for the G4 when Verizon is only selling it for $550 doesn't hurt either.