After using the "normal" stuff for a while, I found several things about it that I did not like, so I now buy my harnesses piecemeal to get exactly what I want. These are the bits I use:
2" webbing ($0.80/ft x 12):
Flat Nylon Webbing, per {1 ft | 30.5 cm} | Dive Gear Express®
Rigid D-ring for shoulders ($3.50 ea x 2):
Extra Large S/S Rigid D-Ring | Dive Gear Express®
Rigid D-ring for waist belt ($2 ea x 2):
S/S {2 in | 5.1 cm} Rigid D-Ring, Perpendicular on Slide | Dive Gear Express®
Offset rigid D-ring for shoulder strap, to clip SPG to ($2 ea x 1):
Offset S/S Rigid D-Ring | Dive Gear Express®
Serrated belt slide behind shoulder D-rings to ensure they can't slide down ($0.65 ea x 2):
S/S {2 in | 5.1 cm} Serrated Belt Slide | Dive Gear Express®
Belt slide ($0.65 ea x 3):
S/S {2 in | 5.1 cm} Belt Slide | Dive Gear Express®
Dive Rite 2" crotch strap with padding ($18.50 x 1):
Dive Rite Crotch Straps | Dive Gear Express®
Glass-filled Nylon waist belt buckle ($11.95 x 1):
http://www.leisurepro.com/p-xsscbu/xs-scuba-clear-path-buckle
If I were to insist on metal, I would get the OMS matte finish buckle ($10.80 x 1):
OMS Anodized Aluminum Weight Belt Buckle | Dive Gear Express®
I really like the glass-filled nylon buckles. But, my issue is to have a buckle that's not shiny. I used to use a shiny buckle and it seemed to attract way too much attention from barracuda. I have not had a single "curious" barracuda since I switched to the black buckle.
To that rig, I add:
Rubber bands I cut off on old bicycle inner tube (x 8)
a loop of thin bungee cord to retain the LP inflator. ($0.25/ft x 3):
Shock Cord - Thin { 1/8 in | 0.3 cm } per { 1 ft | 30.5 cm } | Dive Gear Express®
Titanium EMT shears ($6.95 x 1):
DGX Titanium EMT Shears | Dive Gear Express®
Sheath for EMT shears ($8.00 x 1):
MSM Shear Pouch - MIL-SPEC MONKEY STORE
Ceramic blade Sharp Cut ($17.95 x 1):
DGX Sharp Cut | Dive Gear Express®
That works out to $56 and change for the harness and $33 for the add-ons, for an actual total just under $90 (not including any shipping). And no floppy D-rings to try and hit with a bolt snap when you can't see it and you can barely feel it through your gloves, and no shiny buckle to attract unwanted attention.
For single tank diving, I add a suitable wing and:
ScubaPro-style quick-release tank straps (on sale for $30/pair x 1 - normally $20 ea x 2):
DGX Tank Straps (PAIR), Quick Release with S/S Hinge Buckle (Last One - Shop Demo Unit) | Dive Gear Express®
Book screws to hold my wing in place when I'm changing tanks - not required, but convenient ($1.25/pair x 1):
Assembly Screws, Plastic, Set of TWO | Dive Gear Express®
