I think the most important thing to consider in a regulator is supply pressure effect. For whatever regulator yoiu buy, make sure you get the spec sheet (and that you aren' going to gas all your fish).
Did you put one together?
But by "best bang for the buck" I don't mean cheap crap. It's more some of the builds here have mismatched brass and stainless steel parts and it seemed there was some reluctance to post the cheaper builds due to all the super beautiful stainless steel builds. The beautiful builds are really nice but brass is just fine with me or a mix of SS/brass.
So I'm not asking for cheap crap but rather the builds someone might have hesitated to post because they aren't as beautiful. But maybe I'm wrong and everyone is going SS because if you're patient, you can get them on eBay for good prices.