I think the CO2 types are a waste of money. You need a cartridge of CO2 about every time you use it, may take more than one for some tires. Those ain't all that cheap.
I just carry a 12V compressor, about $15 one as I don't like the tiny $10 one.
As long as you have 12V power you never have to worry about being out of air and it's always free once you buy the compressor. Plus you can use it on anything that needs air. I use them on car and truck tires also, would take lot's of CO2 cartriges as much as I use my little 12V compressor.
I don't like using the bikes compressor other than for shock, I figure no need to wear it out, would be more expensive to replace or rebuild the bikes compressor than buy a new $15 12v one if I ever burn it up.
I have a couple times plugged and aired up flat tires for people on their cars also when they were stranded.
The rope type plugs work well for me. I have the kit but never really use the reamer. If the hole is too small to force in the plug I'll use the reamer to make the hole larger, but only then. If the plug can be forced in the hole I do not use the reamer, I want that hole tight on plug. I have seen people use the reamer like a saw, and that's what they do, they saw a larger hole in the tire, then they wonder why a plug did not work well. They make a small hole into a large hole then put in a small plug! LOL