I would choose the crossfire and the macdev over the dye throttle, they have faster recharge rates, and the dye throttle is supposed to be a few ounces heavier. The macdev is the best air tank, hands down, but its also quite pricey 220 for a 68/45 new that around 30-40$ more than a new crossfire.
QFT, but man are those babies expensive! Ha, used one once, fell in love with it, and then it broke my heart when she decided to go back to her owner. I love you baby!