Well, I've only met Mike F. personally once, but have comm'd with him many times and I can say I consider him to be a very good personal friend. Humble, kind, and very accomplished as a musician.
I've only owned a couple AG cabs, but have nothing but accolades for Mark. One of the AG cabs I had was a Tri-112L. I bought it used and it had several cracked corners on it, and I noticed that a couple corners looked just as scuffed, but not broken, and that they were a slightly different type. I called Mark and he said their supplier switched OEM's on them without changing their part number, and Mark ended up with some corners that turned out not to be quite as nice.
Well, he sent me a complete new set of 8 corners free of charge and didn't even ask for postage even before I could ask him for a price (remember, I bought it used!).
Mike W., if I had my prefs for an AG stack, I'd use a pair of Tri-112L cabs. Circumstances led me a different direction, but I LOVED my Tri-112L. It's my absolute favorite AG cab. Sounded GREAT with all the amps I tried with it... Aggie 500, Eden 330, TFB 550B, EBS HD350, etc. etc. etc..