I've owned this jack for 5 years. I work on cars full time. I've not had any problems with it and it really saves a lot of time dealing with lowered cars. It is made in china and there are some negative reviews out there of guys claiming early hydraulic failures but mine has been used 5-6...
How much $ do you have in material to build the folding workbench? Thank thing is awesome! I like how you're making this garage to be a flex dual purpose space.