My regular dive buddy just bought himself an OMS with all the individual parts so I do understand about the mix & match up. Not sure though if that is a great idea for me but I will start to look at this option. OMS & Dive Rite are available at my LDS so that would work. I like the idea of putting it together to suite the individual that’s using it & just replacing parts you need is great as well. Just asking has anyone tried the new Hollis HD100 or owns one? The only brands available around here are Scubapro, Oceanic, Sherwood, OMS, Dive Rite, Genesis, Zeagle & maybe TUSA. I have found that I also like the design & the set up of the Aeris Oceans 5? Anyone have any input on this model? It’s not available at my LDS but I like the review it got. Please feel free to share your advice & thanks to everyone who as weighed in! I’m looking at every option.