I am considering replacing my existing hydraulic jack for this Arcan air jack:
http://www.costco.com/Browse/Productgroup.aspx?Prodid=11071422&whse=&topnav=&browse=&s=1
The 1.8 ton model seems to have the lift I need for my Astro van.
I figure that since I have a heavy duty air compressor in my garage why bother with another hydraulic jack. I figure that the air jack may be quicker and certainly easier than my cheap chineese hydraulic jack.
Anyone have any experience with air jacks?