nitro (you better have this anyway)
equalizer board (if you care)
not as tight of a feel as other high ends
Dear God! This thing is so fast and so easy to use. Beautifully designed and low pressure. I don't know what more I can say. Well, one thing I don't like is the face that it doesn't feel as comfortable as an Angel. But then again, it has a kind of rugged feel to it. Something that makes it feel more like a man's marker. That or it's just me.
To put it short: choos between this or an Angel. You'll be pleased with either purchase you make. Flip a coin if you'd like.