My husband is a watch enthusiast, and he has gotten me to appreciate fine mechanical watches. Last year, I picked out my first automatic after a long time searching (I'm like that). I enjoy the watch immensely.
I'd also want to experience 2 day M school. I did a one day course here (in Canada) with half a day in an M3. But really what I got out of that experience (which was definitely worth it) is that I wanted an M3.
I'd say pick the one you think will give you better memories. The watch was waaaay more meaningful to me because my husband could buy me something he is a real enthusiast about and i got to pick it (and he loves it).
2013 M3 coupe (Azurite Black, Black, Piano Black)
+ miata nut (2 miatas) + Mk6 GTI 5-door hatch (our mini-SUV