I guess what I like best about the VL is that it'll handle so many different types of media. Watercolor & gauche - it'll give a solid 1/64 line if you're good. With the larger tips it'll handle the heavier media like latex. It has a 3oz jar, 1oz jar, and will gravity feed. Its a dual action and very easy to hold & operate.

Also air supply is something you never want to scrimp on. Make sure you have a good, accurate regulator, a 10g tank (this will smooth the air supply out so you don't get pulses), and good water trap. With an AB, you'll probablly never shoot over 25 psi even with the heavy stuff.