I have decided I really can't do without an air compressor. I would appreciate advice on what to look for and lookout for. My needs are operating air tools including buffers, grinders and wrenches. Eventually I may want to do some painting. What CFM, HP and tank capacity should I consider the minimums? Bear in mind this is for home shop use, not commercial. I would only be powering one tool at a time. Any particular brands that are good or bad? And where is a good place to shop?

Thanks

Pat