I've just changed to MPSS all round - what a difference they've made!
I previously had Falkens on the front and RE50s on the back, but wanted to get a full, matching set and all 4 needed changing.
Considered going with the Potenzas again all round, but after reading comments on here, bit the bullet and paid the extra cash for Michelin, and I'm so pleased I did!
Most noticeable is front end grip - the Falkens had never felt understeery, but MPSS is like being on rails! (Ok, reality check, new tyres are always going to feel better than ones with 2mm left, but the Zed never felt this good on the Falkens, even when they were new).
I would definitely recommend them if you can find the extra bit of cash!