Hydraulics are much nicer feeling than cable discs (rim brakes feel way better than cable discs in my opinion). For bikes that you use a lot I think its worth getting hydraulics since you do need to maintain them either way.
I only choose cable discs on bikes I use extremely rarely (i.e. I keep one at my inlaws for when I visit once or twice a year and I wouldn't want to deal with hydraulics maintenance in that context).
