Looking to buy air tools for DIY auto work. What do I need? What brands are reputable? Prices?

Found you guys through r/cartalk and thought I'd give it a shot. I'm getting into more serious projects and air tools seem like a good investment since I spend most of my time trying to break through stuck and rusted nuts. My next project, FYI, is strut and shock replacement on my Mazda 3.

I'm thinking I need to pick up a compressor, impact wrench and impact sockets at least. What kind of budget am I looking at for this and who should I be looking at for a quality purchase?

Thanks for pointing me in the right direction.