Well, I'm diving several regs that I've upgraded with both MIFLEX and the Atomic swivel hoses and I'm now going to share with you the following good information:
PN 02-0095-3P (stainless) Atomic regs only (for my M1)
PN 02-0195-3P (titanium) Atomic regs only (for my T2)
PN 02-0097-3P (universal fit for all other regs) (for all my Apeks / Mares /Aqualung regs)
While I upgraded all the LP hoses to MIFLEX on 6 regs this winter, I decided to ... NOT ... 'go MIFLEX' on my primary 2nd stages, but instead go with the neat Atomic swivel hoses for that application instead for the following reasons:
1) MIFLEX is sometimes a little too bendy/floaty, which makes 2nd-stage 'recovery' more difficult as the 2nd stage is more prone to float/drift away-out of reach than the standard, stiffer 'old fashioned' type hose.
2) Also, there are reports that in higher current/flow conditions the MIFLEX hoses are more prone to fluttering/vibrating in the breeze, so to speak, so the 'old-fashioned' hoses are more resistant to that. being stiffer.
3) The Atomic swivels are of a much higher quality/safer design than the Omniswivel versions, as over the years there are many reports of the Omniswivel style/design ones coming apart underwater...there is a small screw that holds the 2 little clamshell halves of the Omniswivel together, and this design has a bad habit of unscrewing/coming apart at bad times, so you have to maintain/monitor the Omniswivel and make sure it isn't working itself loose, which isn't something I wanted to have to worry about, hence the decision to go with the Atomic swivels.
4) this is purely cosmetic, but I like the 'finished'/sleek look of the Atomic swivel hoses, especially where they attach to the 2nd stages, no ugly bare metal exposed connection but neat, smart looking rubber swivel 'boots'.