I don't know of anywhere where the dyna flow costs more than Angel AIR, it usually runs you about $450 and Angel AIR is usually a bare minimum of $500. Putting that all aside, the dyna flow is a spectaular system, I almost bought one of those instead of my Angel AIR, but I think the AIR is the better regulator. However, the dyna flow is much smaller, has a push botton on/off, and provides some of the most consistent regulation in the paintball industry, so it's all up to you. Look at the features of both, and figure out which one suits you better.