+1 to FreeBSD
I use kvm at home and work (where it competes admirably against our official solution, VMware) and have several FreeBSD on kvm instances that have never given me any trouble. I’d happily pony up for another droplet here if I could run FreeBSD on it. What’s the problem? Lack of support talent? Insufficient voodoo to get FreeBSD working with the D.O. console? I’d be interested to know, if only to understand your technology better.