Been looking at the new Roli lightpad M and am interested in its expressive capabilities when used to control other synths. No time for Roli app or the Steve Aoki soundpack 
I have an original Lightpad and a Seaboard block I use with my iPad sometimes. Honestly, for portable playing, or on trips, I still prefer the OP-1. The amount of pressure it takes to trigger the Roli stuff is just not something I can get into Once you start to use it, in the Roli Noise app it’s pretty good. Paring with other apps is inconsistent — anything that supports MPE is amazing, the rest not so much.