MFJ hardware was part of my start in amateur radio. Thanks for being a part of those wonderful memories (although I do not expect MFJ to see this comment).
ATR 30 3KW tuner here, along with a Vectronics dummy load and several antenna switches. Tuner handles 1.2 KW From Ameritron AL 572 amp all day long. Low cost vacuum tube amps will be the big loss for new hams.