We get this question a few times a day, so we figured it would probably help some people out if they were sitting on the fence b/t the Woo.E and the PC/C-S/M.
Let's look at the vital stats-
Woosatch Version EPlate compatability: CPC 10"x12" ICW & SAPI plates, Military SAPI plates up to size Large (XL military plates require Woosatch XL special order)
Quick Release capability: Release shoulder buckle, snap and side buckle and it will fall off one side, OR release both side buckles and take off over your head.
Bib PALS: 3 Rows of 6 Channels
Cummerbund PALS: 3 Rows of 12 Channels (Woo A; 16 Channels)
Rear PALS: 6 Rows of 7 Channels
Pockets/Storage: Map compartment (2) openings at top of bib and cummerbund. Rear plate carrier will facilitate Hydration (external hydration recommended) and other gear.
Padding: No padding integral, optional Shoulder Pads available.
Special Features: Angled Tri-glides provide the option of a RACK type front-carrier-only setup by using the shoulder straps in a cross-back configuration.
Larger Option: Woosatch Version A, offers 4 more PALS channels on the cummerbund.
Weight: 2 lbs. 6 oz.
Price: $155
Plate Carrier + Cummerbund, S/MPlate compatability: CPC 10"x12" ICW plates, Military SAPI plates up to size Medium, CPC 10" x 12" Level IV SAPI plate will fit in front carrier only (will fit front and back in L/XL model)
Quick Release capability: Pull up on center flap, pull both velcro ends of cummerbund, and release both side buckles to take off over your head (buckles on the shoulder straps do not provide release capability unless the strap is threaded outside of elastic keeper and D-ring).
Bib PALS: 2 Rows of 6 Channels, 1 Row of 8 Channels
Cummerbund PALS: 3 Rows of up to 22 Channels (L/XL; up to 24 Channels)
Rear PALS: 3 Rows of 6 Channels, 3 Rows of 8 Channels
Pockets/Storage: Map compartment (mesh) behind front carrier, and at top of cummerbund.
Padding: Integral thin foam padding lining both carriers, also on shoulder straps.
Special Features: Mesh pockets on sides of cummerbunds for 6" x 6" Ceradyne side protection plates.
Larger Option: The L/XL model will hold all 10" x 12" plates front and back, and has 2 more PALS channels on the cummerbund.
Weight: 3 lbs.
Price: $165
Hope that helps answer some questions!
Joe