In the last month I bought 2 brand new regulators: Matheson SS 3816 ($88 shipped) and Concoa 312 ($77 shipped). Bettatail told me I was a fool (he is right) but I'm happy.
Even though Matheson Series 8 are HUGE, I've been running one with 2 neeedle valves for a couple of years - their are real workhorses.
Cost a little bit high but still went for a stainless steel Concoa 332($75), it is really rare, built several 312 but never had a chance to touch a 332,
There is one stainless steel Parker Hannifin DSG 750 series reg currently, pm me I will send you the link.