I have one.
I have one 701-510, and would would do it again. The quality is as good a daytec which is two times the cost.
Reason I know is it is made by Daytec for J&P. They had a typo on my MSO, and corrected the problem asap by having the builder send a certified correct MSO urgent mail which was Daytec 17469 Lemon St.
Hesperia, CA 92345
So you are buying a quality frame through J&P.