For a Nice Look, I'd suggest that he paint yellow daisy's on the wing, and maybe some green vines down the harness...
Seriously what the heck is a NICE look UW. Even hot babes don't look nearly as hot in scuba gear, even if I can generally still admire woman in DiveGear
For some manufactures....
Oxycheq, DiveRite, Hammer, Zeagle, Halycon, DeepSea, Salvo.. the list goes on, and I don't even dive a BP/W setup
IMO if he's a dude in a drysuit wearing scuba gear the nice look is out the window (for me at least) at the point of "dude".
Most Holgarthian harnesses are just webbing. If he wants more comfort then DiveRite, and Zeagle make some padded and countoured harnesses, but the DIR instructor may look down upon you from above, and smite you.:10:
I think some more useful information would be what lift he is looking for, what budget he has, and if he thinks bungied wings are a good thing :11doh: