I had DDC so my only option was KW (as they do DDC cancellation kits) and went for KW v1...
I had KW v1 & v2 on previous BMW's and they have been great compromise in sporting firmness and still have good (relatively) ride...
The KW v1 implementation on the F56 is a little firmer than on my previous cars so the ride is not as good although that might be more to do with them being a bigger car than the F56... The handling/road holding characteristics are great as you would expect from KW.
You could also consider the JCW Pro suspension which is made by KW and retains warranty which I've read is near enough the KW v1 but made to Mini's own specs..
There is a review of Bilsteins here
http://www.northamericanmotoring.com/forums/suspension/307729-bilstein-coilovers-thread.html
I had KW v1 & v2 on previous BMW's and they have been great compromise in sporting firmness and still have good (relatively) ride...
The KW v1 implementation on the F56 is a little firmer than on my previous cars so the ride is not as good although that might be more to do with them being a bigger car than the F56... The handling/road holding characteristics are great as you would expect from KW.
You could also consider the JCW Pro suspension which is made by KW and retains warranty which I've read is near enough the KW v1 but made to Mini's own specs..
There is a review of Bilsteins here
http://www.northamericanmotoring.com/forums/suspension/307729-bilstein-coilovers-thread.html