What ones do people use? Are there adapters that can be had to stop the jack from digging into the sill? And if not, what point do you use to jack the car up from?

I always jack my cars from the front or rear subframe

most easterly pandas said:

i always jack my cars from the front or rear subframe

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+1

If you do that, you should also use axle stands incase the handbrake fails.

wegi said:

If you do that, you should also use axle stands incase the handbrake fails.

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I use axle stands as a matter of course whenever going under the car, more if the jack fails rather than the handbreak, but if only changing a tyre I won't bother unless its going to be in the air for extended periods of time.

A big rock or lump of concrete behind the rear wheel to stop it rolling back, in front of the front wheel to stop it rolling forward .
Trolley jack under suspension arm ends (subframe end at front , spring cup at rear.) If you use the sill jacking points you need a block to fit or make one to fit. Beware the tyre-shop boys who just jack up on the sill and you have to repaint/seal after each trip.
(My drive-on ramps are too steep for the low front of the bravo. and I never use axle stands because I saw some collapse once)

when your off road and deflated.

or ya old gas bag