Keeping my E92 M3 (it might make the cut for a BMW TV commercial, so she's even more of a keeper). Buy a house (long story why I still haven't done that yet).
Then in the future, it's a tough one. I've had my heart set on a used 997.1 Turbo (Speed Yellow, black interior, 6MT) to add to the M3.
However, judging from that PS of the M4, I might be convinced to get an M3 or M4GC (depending on how that turns out), and get myself an older aircooled 911 instead as well.
So either E92 M3 + 997.1 Turbo. Or E92 M3, next gen M3 or M4GC, late 80s 911.
P.S. I'm really falling for the new Vette as well. But I have to fulfill my bucket list item of owning a 911 first!
Current: 2008 BMW M3 Sparkling Graphite/Bamboo Beige/6MT. 1999 BMW M3 Techno Violet/Dove/5MT. On the list: BMW M2 Long Beach Blue/Black/6MT