I like Fastrax cans of paint, they are cheap, and very good.
For masking tape, I have tried em all, and tamiya is the best (and most expensive)
And most LHS carry a certain line of craft knifes that are what the surgeoons use, only they arent steralised, and they are sooo godd for cutting masking tape.
I have been doing cans for 4 yars now, and am just awaiting my airbrush and compressor today, so I'l llet you know how I get on with it.