Played both modenas, 60 and 90........ the 60 has more grit being an el34 head, a friend dropped it off and played with it this weekend, also played the 90 in the store tighter , more headroom than the 60, both have very nice cleans, both do metal very well, dark amps not marshally at all.Can scoop em to get real compressed, I was debating the m90, the engl se, and then I played a Diezel vh4, so that ended the quest. The m90 reminds me of the diezel herbert, a good attempt but when we a/b them it swallowed it.That is just an opinon.But Elmwood make nice amps. I hear to get to the bias its a lil difficult compared to others and the blk face plate cracks if not careful. just what i read .