Need amp suggestion for PBN Montana EPS2.

If you were to tell us WHY those amps were not successful... you might get a decent answer.
Otherwise no one knows why you did not like the ones you tried???

Why not try one of the amps that PBN sells. They are beasts that cost a lot, but every once in a while one comes up on the Gon (like now) the Everest is on sale since 11/29 at a good deal. I am not the seller.

Yeah, as Elizabeth said, it would help to know why those you mentioned don't work. Have never heard the Montanas, but from what I've read, they're killers. When you get them paired up with the proper amp, you should have a monster set-up.