At least this isn't an M3 vs. C63 argument
In-fighting within the family is always much more productive
The 1M is a great performance bargain IMO. The M3 is better overall (especially for a track oriented car) but the 1M is probably a better "value." I also find it funny when people start arguing drag times... the my e-peen is bigger than your e-peen bench racing is entertaining. Funny that neither car was really built to be a dragster and are both much, much more than that but people still measure their worth on stop light races. If that is your measure, get something other than an M car.