Apeks TX 50 or ATX 50 Regulators?

[Vtach]

I have both the ATX 200 and TX 50s.  From my understanding, the ATX 50 and the ATX 200 share a very similar, if not identical, second stage that is smaller than the TX series second stage.  I have noticed no real difference in breathing performance between either reg.  The biggest difference seems to be the "comfort" of the second stage.  I think there is something to be said for having a second stage that feels smaller, lighter and just less bulky.  It's especially noticeable when switching from backgas (ATX 200) to deco gas (TX 50).  I might switch to ATX second stages for my deco regs next year.  Hope that helps Jitka.

Todd