what's he do when that 5mm compresses at depth? Pool vs. 100ft is huge. He must also float somewhat naturally because I have a fair bit of air in my wing with a drysuit and two HP120's. With the top of a 7mm john I was barely able to stay at the surface when they were full...
I prefer the Nomad to that list. The full modular system is much better IMO. Those who says it's not streamlined don't have it pulled in right. Is it like a Razor? No, but can the Razor take me in 40* water with 2 stages and a couple of deco bottles? I think not... It has less drag than my drysuit does, and a lot less than doubles, so no complaints. I prefer using my Nomad with doubles over traditional wings as well because of the butt plate and I feel more stable with the wing tied in.
The OMS is a weird design with a ginormous plate in the back... Not a fan. Haven't dove it but wouldn't want to...
Oxycheq looks nice, but the wing profile is weird. I wouldn't want that much of a balloon on the bottom of the wing. My Nomad trims out fine without the huge bladder under the plate. I think that'd be far less streamlined than the nomad is...
Rob listed issues with the Hollis wing with the dump being on the bottom side of the wing making purging difficult and an issue with the rails that requires modification. Nice thing with the Nomad is if you don't like the plate, you can switch it. Have a small butt, ditch the plate get a double D ring or tail plate for rebreathers. If it's too narrow get the tech butt plate or 4xl butt plate. Sizing of the transpac is there too which is a huge plus. Obviously I'm biased towards my system, and there isn't anything wrong with the others, but it's my preference.