I am interested in a tailgate damper. Moe's has the EZ Down for 54.95 and the Dee Zee EZ Down for 61.99. They look identical. Does anyone know if there is anything about the Dee Zee version which would warrant the extra cost and if anyone has either one - your likes and dislikes please. Also do they help lift the tailgate when closing or just assist with the lowering? Thanks in advance!