If the Mf is at the buy rate looks like a good deal to me. I haven't been shopping them as I've had mine for a year so not 100% on current discounts.
Check this thread also tons of great lease info. Post on the thread as well you may get more replies. Good luck!
Please post your F90 M5 Lease deals
https://f90.bimmerpost.com/forums/sh....php?t=1468907