I'm getting very close to walking in to my local store and buying an EM1 (if they'll match the internet prices - which they've done before). I already have a GH4 that honestly I bought for 4K video, and love it for both 4K video AND photos, in fact it's been so good I've invested a lot more in M43 glass than I though I ever would, but I'm thinking that IBIS is something I could use a lot of with fast primes in low light (weddings etc) and I do like the EVF. I'm quite happy with the feel of the GH4, but I need to pick up another photo body, either as primary or backup, since lugging around the 5D3+ff lenses is getting old really fast, plus I miss the EVF every time I pick the Canon up. So, why did you buy an EM1 over the GH4? IBIS? EVF? Size? Custom Buttons? Sorry, I'm not interested in the EM5 or EM10, just the EM1.... so it's either an EM1 or another GH4.