I have an aluminum one that I bought from Sears when I first bought my bike. It costs $200.00 and has served me well but after looking at HDDons video I think I would have purchased the J & S jack because of how the frame doesn't stick out too much in the front like my Sears does which can be a nuisance for cleaning. Also, I store my bike upright between my garage doors so that both my cars can still be parked in the garage during the winter. It is a tight squeeze backing the cars in and especially with the bike frame extending slightly into the path of the car space. The J & S would be less extended and more out of the way. Plus, I really like the way it rolled around on the floor. I only roll my Sears jack with the bike raised up on it about six inches or so to get it dead centered between the two doors.