I'm looking into the ones from barricade they are $30. Not sure of how accurate they are but if they can get me close it will be good enough.

Yes. That's what I do. I put all four on then by checking them I just put the gauge right on the deflator. Works great. After you use them a few times, you're able to figure out about how long it takes.

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I like my Currie E-Z Deflator - http://www.4wd.com/Jeep-Wheels-Jeep-...pn=CURCE-9029E)

I also use the ARB. Never had a problem with screwing up the threads on the core. Does a pretty quick job. I do carry spare valve stems and cores just in case though....

X2 on the Currie...appears to be the same as the ARB only slightly less $$. Makes quick work of airing down, easy to use and keep track of PSI.

Been using the brass style ones from rugged ridge,gets my tires down to 6psi.Works great

How easy is it to adjust them to a specific pressure and keep them there?

This one is looking better, pricewise, for sure, except with shipping, it will still get close to $40, which is more than I want to spend. I'm still leaning toward the brass though, if they are easy to adjust and bring the pressure down consistently and accurately, every time. It is looking like this is the way to go, for speed, though. I'll be tuning them for 20lbs for most situations, and probably 15 for slower, more technical situations, like rock crawling, so adjustability has to be easy.

Edit: The Curry just got a boost, as I saw there is free shipping at 4wd Hardware. I'm now leaning that way. $30 is still steep, so I'm waiting to hear back from the brass users to see how accurate and easy to adjust they are.

It's easy to adjust them, a little bit of patience is all it takes.
None of the Staun-type deflators, including the Staun itself, can be counted on to keep the adjustment, but there's a simple cure -- a drop of Locktite on the threading.

Another interesting option, expensive, but with multiple pressure options - you just push and rotate to set a desired psi.
This one has the range of 10, 12, 14, 16, 18 or 20 psi :

Attachment 597012 Attachment 597013 Attachment 597014

His deflators must be crappy knock offs, I have the staun II's and no way anyone with an arb deflator comes even close.

Here is a good test for anyone considering getting them (or another brand)

https://www.youtube.com/watch?v=9XtZ1QOP9Pg