Same here on the GT75. I passed on a KILLER deal on a brand new plub/tan 25 watt combo, traded in at one of my PRS dealers. Played it, and just didn't love it, but knew from past experience that I didn't love that speaker. Later got a 50 watt head and love it with EVERY speaker I play it with. Really, really, REALLY wish I had that combo! I think if it had a V30, or H in it, I'd own it. But, since I have a 50 watt head now, what that combo would have in it if I'd bought it, would be a JAN 5751 in V2, and my Eminence Red Fang Alnico speaker. Boy, would I love to hear that! And, like I said, it was brand new and SO cool looking.
Funny thing is, for what they're going for now used, I could easily trade my Mark V25 for one and get cash to me on top. And I'd do that right now!