I've been around the houses a lot of late. I jumped into m43 back in 2012 when it was in its ascendency (from Canon FF DSLR - 5Dii) and found it a very liberating experience. I since built a decent Olympus system (including buying a 75/1.8 from
@christilou) and apart from a brief dabble with a Sony A7rii some years back I've been pretty faithful to m43. Then in May this year I upgraded from the E-M1ii to the E-M1iii and was a bit underwhelmed. At about this time I'd been musing (again) about FF and liked the look of the Nikon Z system. Then there was the JIP announcement so it seemed a good time to move on and I bought a Z7 with the 14-30, 24-70 and TTArtisan 11mm fisheye (I like fisheyes). I also ordered the 24-200 but it was on back-order everywhere.
So I ran with the Nikon system over the summer and into the autumn but bit by bit I found that despite its stellar IQ, I just didn't enjoy shooting with it as much as the Olympus cameras. Then I eventually received the 24-200 that I'd had on order for months and was somewhat disappointed in it. I'd hoped for something as good as the 12-100, but it just wasn't. I need (no, I really do!) 200mm equiv FL for landscape and I realised that the only other alternative with the Nikon was the 70-200 f2.8 which is huge, heavy and pushing £2.5k!
I then went back and looked closely at the images I was producing and how I was using them and came to the conclusion that apart from the dubious pleasure of admiring the IQ at 1:1 in LR the Nikon was making
no practical difference to my photography in terms of output. Worse, it was actually impeding some of the enjoyment and in fact some of the shooting opportunities (e.g. to get some shots of summer lightning storms I used the E-M1 since the Nikon has no LiveComp mode).
So, the obvious thing to do was to admit my mistake and back-track. So, I sold all the Nikon gear. The financial loss wasn't as bad as it might have been since I bought most of it as grey imports and sold it for only a couple of hundred less on eBay.
So, I'm now back with the E-M1iii, 8mm fisheye, PL 8-18, 12-100, and 40-150. I'm watching the planned Olympus 8-25 as a possible replacement for the 8-18, but other than that I'm not planning any moves at all.