Just curious what your use case is. More track or more daily? Do you need 4 usable seats? Sounds like you prefer engagement of 4bw while m4 was missing the connection, but yet you expect g87 to be more raw. Have you driven 4bw on track to see how it compares to g80? I thought 4bw was putting down similar times with less power.
Anyways, buy whatever makes you happy. I just couldn’t follow the thought process

. I hope g87 is a great car - it’s good for consumers.
And unless you get one very early and get out of it early, expect to loose money. Car market next 2 yrs is going to be very different than car market last 2 yrs imo.