vehicle jacks?

[270man]

Soliciting opinions on the proper jack (or jacks) for hunting vehicles. Only one thing is more frustrating than having to jack up a truck/SUV in the outback to fix a flat or get unstuck -- and that one thing is to have to do this without a decent jack. I've owned a couple of hydraulic jacks and both have lost their seals. They worked great until they began to leak. The scissors-type jacks that come with new vehicles seem pretty flimsy to me (though I've used them on a couple of occasions). My favorite heavy-duty jack is a "High-Lift", but I'm not sure I can get it in the proper position to lift my heavy truck. It fits fine under the front or rear bumper but they don't make those very strong anymore.

What do you guys use?

270man