If I were to buy a new 4 post lift right now, it would be either a Wildfire or an Advantage. They are both patterned after Backyard Buddy 4 post lifts, which are the Mac Daddy's of 4 post. To me, the design of the sliders surrounding the outside of the posts is much safer and stronger than the ones (like mine) that slide on the inside of the posts. Also, the lock slots are much more robust than the other design. If I ever hit the lottery........lol.