I have used both the EV ZLX12P and the Matrix FR12. Both very good. I just picked up a Boss Katana 100 1x12 combo. Very impressed. I can run my Helix LT into the fx return or into the front of the amp with the Acoustic setting. Both modes sound excellent.. the Acoustic mode is a bit more pseudo FRFR but gives you access to the tone stack on the amp to shape the tone of the amp a bit more. One of the better "amp in the room" options I have tried. I may get another to have a stereo rig. Katana only weighs around 30 lbs and seems to be really solidly built.. typical Roland QC.