Got the LR20 72" a few weeks ago.
I've used it to:
Scrape my 440' gravel driveway.
Finish rake my backyard for planting (grass).
Clear underbrush and dead tree branches from about 1.5 acres of woods.
Smooth out and level many small mounds of top soil.
Grade the landscaping around my house.
And much more...
I must say that I have abused this rake in nearly every way possible (I'm sure there are a few ways left though). The rake has held up pretty well. There is some damage to two of the bottom plates that hold the rake tines in and the tines on the ends of the rake are starting to stretch out compared to the middle ones. I haven't noticed a difference in performance with the stretched tines. Other than that (which I may post a question about later) the rake has been great.
As far as I know the Kioti LR rakes can not be fitted with optional wheels. That is something to consider.
Good luck! Let us know how it goes.