Hi-Lift jacks are great if you have someplace to hook them up. The problem is that most vehicles made in the past 20 years plastic bumpers or, at best, lightweight steel that will bend if you try to lift the vehicle that way.

If you have heavy duty steel bumpers a Hi-Lift is great. But otherwise you'll have to come up with some other ideas for attaching the jack. Hi-Lift has a kit that lets you hook the jack to the wheel itself. I've got that kit and have used it to get unstuck, but it won't help you if you need to change a tire. I've also made a longer chain with hooks on each end and pipe insulation to protect the bumper so I an lift either the front or back via the frame, but this is VERY unstable and dangerous, and I wouldn't want to be working on the car lifted this way.

The wood block solution seems to be the best. I have a 12x12x1" piece of oak with an 8x8x2" block of pine glued and screwed on top that I use under the factory jack (or high-lift in loose soil).