It's mostly what you are used to I think.
I don't like the start/stop buttons, but I have a friend who doesn't even plug in her foot pedal and I have to admit that has some advantages. Personally, I like the speed control the foot pedal gives me, she just adjusts the knob by hand which just seems so wrong to me...
I've been using vintage machines most of my career and I was recently given a modern machine by a friend. I'm trying to learn the available features and not just use the straight stitch. So far I love the knee pedal for the presser foot up/down. And who doesn't love a working automatic threader??
I'm trying to remember that this model can raise/lower the needle with a tap of the bottom of the foot pedal. I've been using the button but again, I don't like buttons!