scrane
Contributor
The d420 might be a better bet for those who service their own gear and have the expertise to modify factory components.The D 420 is the best second stage I have, its easy to service and unless you really want the SP seat rather than the modified 104 o ring seat you don’t need the kit very often but with the kit you get all the moving parts.
the 400 can go a long time but parts are getting harder to find, the purge cover is the main weak point along with the diaphragm, the 420 uses more commonly available parts.
But for the average guy? I don't think so.
When my d400 gives up the ghost I'll have to go into the basement and dig up the spare. I have a feeling they'll outlive me anyways. If not I'll dust off the Atomics. The d400 is not without its concerns, but its performance is worth it for me. Probably the same for you and the d420.
But the question is: can ScubaPro sell and make money on the d420?