well thats not good, I was planning to buy the PX3 because of the balanced piston/price but now i have to shell out an extra 200 bucks or more for a DVT? oh well too bad they dont balance the price. I really love the alpha 8/SP5 so it is a shame I wont be able to get a hold of the PX3 at a good price. I have everything Oceanic, Their piston regs breath really easy, simple to maintain but I guess I need to try another brand for my regulator. I know im staying away from Cressi / Tusa for my regulator needs