I'll echo what Blacksheep stated above. I used to use Krylon rattle can primers as well, but found that coverage wasnt the greatest for me. There are a few guys here that swear by the stuff and to each is their own, my suggestion is to find what works for you! I too, use a combination of acrylics, enamels, even some lacquers (Alclad II). Lately, I have been using primarily Ammo of Mig Jimenez colors and Tamiya. I really like the way they perform, they are great for airbrushing, just remember to do some research on each paint you intened to use to find out about any specific application techniques; each one can be a little tricky at first. As for primers, I have switched to using Badger's Stynlrez primer as my first go-to, followed by Ammo of Mig and AK Interactive primers. I love the way that Stynlrez self-levels and the coverage is great, it does require an airbrush for application.
As for airbrushes, my first brush was the Master G-22 I purchased on EBay, it was a great learning brush, but soon found that I wanted and could achieve better results if I had a better brush. I then picked up a Paasche Talon and absolutely love it, I recently picked up a Badger Krome; however, I have not had a chance to actually put any paint through it yet. I have a small hobby compressor with a tank that I purchased of TCP Global, the link that Blacksheep provided above. It comes with a pressure guage, moisture trap and is very quiet.