It's already been mentioned, but I can understand not everyone wants to read the entire thread (especially after it was annoyingly merged): you don't need extra jack pads. Furthermore, if your car is lowered, it will be pretty much impossible to fit a jack under with an extra pad installed. For home use, just get a jack with a proper pad. I use
this one to get things started, as my car is lowered. I can't fit my "regular" jack with
Jackpoint adapter until I get things a bit up in the air.
As far as installing extra pads for service, you're likely to just annoy the techs.