had my asymmetric 10k bendpak for a couple years and couldn't be happier. i paid someone to install it because it was almost a wash paying for freight (self-install) or having the retailer install (no freight cost). also, because i knew it was going to regularly support my 8500lb dually, i wanted there to be no question on it being installed right.
i've had zero issues with it. having spent a couple decades working on jacks and stands, it is my favorite tool in the shop. recently had to do a transmission at the track, on my back under the car and man do i prefer the lift and trans jack

even doing brakes i lift the car up 18" or so and use a rolling seat.
no question rotary makes a great lift and *I* think the bendpak is every bit as good. that said, having a local company that can provide service or warranty help is a valid purchase criteria.
ahm