I talked to my friend that had that 11,000 lb alignment rack lift he sold,and he told me the moron who bought it for 100 bucks left it outside the past 5 years,and decided to SCRAP it !..."because it was rusty and he didn't feel like having to wire brush the whole thing down and paint it--and perhaps have to repair or replace a hydraulic cylinder on it"...

...I would have been glad to give him twice what he paid for it..I'm sure it brought less in scrap than he paid for it too...
My friends two post "Globe" life had one of the leaf chains bust while a car was being lifted a few weeks ago--had quite a hassle getting the car off the lift,AND trying to get the right part for it,it uses a metric chain thats not common (of course)--
Last fall he had a hard time getting a new equilizer cable for it too,the parts were not that expensive,just that they had to "guess" what model it was because they only put stickers on it instead of metal tags with stamped numbers,and it was worn away,so only a partial number could be found...the company that had parts for it in Illinois had to send two cables before he got one that worked...
His lift was "down" 2 weeks because of that each time...said it took him about 5 hours to install the leaf chain with the help of his co-worker--the cable job sucked too,he said...but at least they were able to fix it themselves--I'm sure a "service call" wouldn't have been cheap..
I like the runway lifts ,the one I missed out on had only 4 cylinders to do the lifting--no cables,chains,or other things to muck up on it..I know the runways can be a pain to work around if your doing a tranny swap or exhaust work,but I found it 100% better than lying on the ground trying to do one..one plus about the runways is you dont have to crawl under the vehicle to position the arms,and hope they pick up on the intended spot,and dont slip off...
My friends 2 post lift often requires wood blocks to be used between the lift arms and the car,so you wont crush step bars or rocker panels in on some vehicles,and more than once I've seen him struggling to install a tranny and I notice one of the 4 lift arms isn't even touching the car,or the pad is on a leaf spring eye,that it could slip off of easily...

..he is braver than I am,I dont trust things balancing like that ,especially when your shoving a heavy part into place!..