FF6 is also one of my all-time fav's, I just bought the Steam version and playing with PS4 controller I have no complaints. This was never a fair fight for me though, as long as this version provided the upgraded sprites and ran without any glitches, I was going to be thoroughly satisfied... and I'm stoked to say that's the case.
The gameplay feels true to the original, it's an easy game but with some fun fights and the chance to occasionally wipe is still there. Random mobs die FAST, but they can also catch you off guard with some damage spikes. I really prefer this versus what FF7 and FF10 gave you - which was tankier mobs that hit like a wet noodle. With no DPS, mobs in 7 and 10 are nothing more than a time sink. All the FF's are easy, this is just more interesting gameplay.
In short, 6 is awesome.