My AXIS/MR12 free-flowed out of the box. It does need a lot of adjustments, but breathes super easy. It's rated the easiest breathing reg in pretty much every price range. Not bad for $150. However, I would not recommend this reg to anyone I care about. One reason is the free-flow. I mean how can you ship something that doesn't function properly. Secondly, and most importantly, my high pressure seat popped in mid-dive. Let me tell you something, I am a scuba instructor, and I panicked. Loud blast like that, and then the air just freeflows out of control. I had 2 students with me, and thankfully I was only at a few meters. If this was during a deep dive, who knows if I would have had enough air to make it to the surface. I just replaced my high pressure seat mylelf -- no big deal. But do you want your wife or whatever to have that happen to her? I don't. I'm getting my wife a Scuba Pro most likely. More expensive for older technology, and not as easy breathing, but definitely reliable, and serviced everywhere in the world.