The price drops are even more incentive. The only thing holding me back is a wife with a nasty big rolling pin, a wicked bass guitar, and firm "guidance" to please sell off the older gear to pay for it first
She never says no, but she is always more prudent with money than I am. :ROTFL:
I don't have an M any longer, so that old "rangefinder in my blood" thing has already wained for me. Good thing too, as that price tag would be sure to raise more than an eyebrow. The X-E1 & GH3 for me duplicate what the Sony also does, so no great hesitation letting go of them.
The tough one for me is giving up the 5D III, as it is my security blanket, for lack of a better description. It is big and heavy, uses big and heavy lenses, and takes quite a lot of ancillary gear to fully rig out. Gives you a big and HEAVY rig in the end, but a rig I know I can get the shots with. It also has by far the best autofocus system and camera controls of all the cameras I own. Universally widely supported too, so everything comes out for it first.
So far, so good with the Sony's but having had my first A7R die on me does give me pause. For my commercial work I have to have backup, and right in hand, not home in the closet. So it is a roller case for Canons, two cases for lights and grip, or a larger small sized ThinkTank to hold two Sony bodies instead of my smallest Domke, one case for lights, and leave the grip at home. Not a hard decision, really.