Lynn, FWIW, I bought a Champion 80 gallon for home about 15 or so years ago. Its a 7.5HP single phase with a 2 stage pump, after cooler, low oil shut off and auto tank drain. I like it because it's very heavy duty, serviceable, has a Baldor motor and made in the USA. They make a 3 ph version and larger or horizontal units. I keep it regulated at 125 but it fills to 150psi. I had to replace the auto tank drain with an updated version this year and I'm not sure it works as well as the old style and may add an electronic one.
We use Champion compressors at work and are, sadly, neglected and outdoors under a roof but they work every day. There is a screw type at the body shop but I don't know much about it other than they trust it run a very large, modern shop.
John
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