Re: Van Jack
Have the 3-ton in my XL Storage and a second in the garage. Works phenomenal, however if you're planning on changing a flat, be prepared with the stock bottle jack to get the axle high enough for this to go under.
The hi-lift- I've had the van "leveled" in the driveway with them. I know my way around a hi-lift and without even lifting a tire on flat pavement I thought it was sketchy to say the least. They're a good tool, but I wouldn't count on tire changing with one... not that I wouldn't, just it's last line of defense rather than first choice.