What do you guys like for a tranny jack?

I did a clutch on my friend's mustang this weekend and no tranny jack made the install a giant pita. In a few months we're gonna do my DD truck and i figure it will come in handy when i put a new trans in my duster. A T5 is a "light" transmission, but not so easy to lift when you're on your back and under a car on jackstands.

So what do you like? There are the HF tranny jacks, but i don't know they're one of the junk products or worth the money.