as soon as the SE became available, I switched to it from my 6s+. the Plus was just too big. the only benefit it has is OIS which means nothing when using a gimbal anyway. and the other benefit is the larger screen for better viewing (live view). the SE's compact size is tremendous when you want to be portable. also, the larger the device, the more counter weight you need. i'm here in Chicago for a month for work, and I actually forgot my counter weight piece back in Cali. it's a good thing I don't need it for the SE.
I mostly just stick to using iPhones for this stuff since I pretty much edit from the phones themselves, and since there aren't any decent apps for Android. also, the iPhone has 240 fps slow-mo which my Note only offers 120 fps. it didn't become available till the Galaxy S7. I really rather not go through all the work of transferring from device to device to device and editing in either FCP or Premier just for some phone footage, unless there was something specific in AE that I wanted to do.