I voted "Other"
Steel Soma Wolverine. Why?
1) steel
2) split stay for belt drive compatibility
3) sliding dropouts for single speed compatibility
4) ability to run up to 29x2.10 tires (Thunder Burts fit fine!)
5) front and rear rack-ability
6) fender mounts
7) Disc brakes for easy wheel size interchangeability. I've run 26x2.35 (Rat Trap Pass) to 29x2.10 (Thunder Burts) with a random 27.5 wheel in there as an experiment.
Currently set up as SS with a rear rack and Topeak bag with deploying side pannier bags. 😃