On One Pompino owners...

Got to be honest Trailerman, I think you'll want a large or you might wind up with a fuckload of stem stackers. I'm 5'10" and I'm on a large with 30mm of spacers.

Depends on proportions though.. I'm 5'11" and ride a medium. I'd like it to be a bit taller of course but a large would be too long for me

I don't mind a few spacers if necessary, but would like to avoid that kind of s-t-r-e-t-c-h-e-d effect you get when you add a huge stem, set-back post and then slide the saddle right back. Geometry seems to suggest I'll be (just about) ok, based on my current riding position, but I guess you don't really know until you sit on it for the first time, by which time you're fucked if it's wrong!