Which Portable lift to buy

[Bob G]

I have a small shop with one entrance so getting a car in and out is a job.
I had a lift that was potable goes up 33 inches using air bags but the bottom is blocked by the slab so no work could be done except for brakes.

Can any one recommend a portable lift that will handle up to 6000 pounds and allows you access to under the chassie work? I am looking to replace the Herkules lift I have and am willing to sell it off cheap.

Thanks
Bob Geco