Crikey, I'm glad I went for the S7 Edge then. I came from M8 but wanted an upgrade due to it getting a bit laggy these days (even after factory reset) and the screen being too small for me. The S7 Edge has been a BIG upgrade on the M8. I still keep the M8 around as a glorified iPod and spare
I'm getting used to the placement of the back/recent buttons now, just takes a while...
My biggest gripe....first world problems for sure!....is the lack of the IR blaster as I used that all the time. Might actually just uninstall/disable everything on the M8 and use it as a glorified remote and mini-tablet. (Did think about rooting and putting on a lightweight ROM and such, but the USB port is so knackered the PC won't recognise it as connected.)
Not sure the NFC is working properly on my 10 either, apparently it's a common problem. M8 will recognise my cards instantly and consistently, the 10 is much more hit and miss.