I was thinking of the Academy.
I own a Prospect 12 which must be very rare as I have never seen another anywhere. It is a truly great 12 string.
There are someother unkown Heritage guitars out there also. I do own the Leon Rhodes model which is very much a tele style guitar. I am always looking for one of the Aaron Cowle Heritage mandolins and would love to try out one of their flat tops.
Yes, the Prospect is a semi. It's a bit like a smaller version of the 535, much narrower at the waist. It came out in 1991, along with the Academy which is a single cutaway.
Good to hear! I actually just played a beautiful used Heritage Custom Shop Artisan Aged H-530 at a local shop near me:
H-530 Antique Natural
It's a real stunner but out of my price range. I definitely don't have any qualms about going for a standard. I have no doubt they are fine instruments!