[ QUOTE ]
I have a 9000 lb Bend-Pak 4 post that works great. It is a "pro" typ unit, requiring compressed air to release the locks. I have just under 12' ceilings.
[/ QUOTE ]
Another vote for Bend-Pak. I have a 12,000 lb. 4 post with two (2) 6,000 lb. rolling jacks. Have had mine going on three years now and no problems.