Im starting to realize this.
What capacity in Gallons should i be looking at? Horsepower?
There's a 15 gallon at Norther tool, $199.00
It's Max psi is 125.
it's 1.1 HP
That compressor might be OK for some occasional intermittent use like taking a wheel off with an impact, or filling a tire. any kind of consistent use and you will be waiting for it to catch up and with will start to overheat (water in the lines)
what kind of compressor really depends on how you use it,
For me I would like something that could keep up with a sander, sand blaster or die grinder on a constant duty cycle and stay relatively cool doing it, woudl also be really nice if ti ran quiet, soem of the old under driven cast iron compressors were very quiet,
gonna take at least $1K to do that new, 60- 80 gallon tank 220v motor and multiple stages, I have been keeping my eyes out for a good used one,
I currently have one of those direct drive oil-less jobbies paid 3xx something for it, craftsman, It cannot keep up, the sticker claims 5HP doing the math that would be at least 31 amps at 120v I am running it on a standard 20A breaker so that cannot be an accurate claim.
Those no-name kits are almost always low end tools, a good single air tool will cost much more than that kit. again for occasional use that kit might work OK.
decide what you want to do and how quickly you want to do it,