Bought and built their FEL, model 1007. Was easy, bought my own hydraulic parts. It would have been easier with theirs, but learned a lot. About welding, about how my FEL was built, It's been very strong and useful.
Now, if I had to make changes I would shorten the main arms or move the bucket arms back toward the tractor and I reinforced around the main bearings after a couple of heavy uses.. Building your own takes a lot of the mystery out of how a FEL works, and how to use hydraulics.
All in all a good experience.