Purchased: New 1500k model
Used on: 1984 Hunter 31 - fresh water
Other useful information: 4:1 boom vang, crusing main with big arse roach, 4:1 mid boom main sheet.
Install time: 1.5 hours (could have done it in less time, but this was the first hole I put in the boat) They offer install kits to use the boom track, but I opted to tap the screw holes for a more permanent mount.
Highlights: Works as advertised. Came with two sets of fiberglass rods. One thicker than the other to provide more resistance. I installed them first, but it was too hard to hank the boom level. Changed out to the smaller diameter rods (10 minute process) and they worked like a charm. I got rid of my fixed wire topping lift and now my mainsail roach no longer gets caught.
Their service department was awesome. Responded to email questions on the same day and were patient with newbie questions.