I was very hesitant in purchasing almost $5,000 worth of theater seating over the internet, but spoke with Alex at 4seating, and he was extremely helpful. Bought 4 seats with shakers and equipment to operate seat shakers. Just received the Mantra series today, excellent quality, beautifully put together. Their white glove service people from JB Hunt excellent guys. Of course, just received them, will let you know how they hold up going forward, but so far really nice seats.