I'd like to try some DR.
Speaking of flatwounds (and guitars), I put a set of Thomastik Infeld flats on my Gretsch G5032C Rancher, but had to swap out strings from another set so as to make it a bumped set (lighter gauge, lighter than some peoples eelectric geetars). I basically wanted to have a flatwound G. Lotsa kajiggering and because they're so light, they're a tuning nightmare. Still, it was a worthwhile experiment, as I found I do like a fully flatwound set.
Would love to hear Bricksnbeatles Hagstrom 8!