I'm surprised people aren't loving their smoothtop stoves. I haven't had one yet but it would be the next thing for me - I think.
I still have the old electric stove with the coil burners. Since they are so ugly, I have these shiny black, cast iron, burner covers over them so it looks a lot nicer!
In all my decades of cooking I've never used gas so my next step would be the glass top I guess (or whatever type of smooth-surface stove they have). I'm probably not one who should be in the company of an open flame. I'm a klutz of the first order.
The visual I have is not a good one. Besides, I have a bird so that's scary enough.
I like the 'easy to keep clean' thing about the smooth tops, though, and the fact that they are electric. I'm so used to electric that even with the old coil burner stove I've long ago mastered it.
As for the garbage disposal (and the stove), hopefully you have the manuals. If not, you can still get that kind of thing online for just about anything.