I've had both. I didn't really like the under-the-jersey biofoam ones, because they got really hot in the summer heat. I currently ride with a Thor Force Chest Protector that fits over the jersey. I'm happy.
I can vouch for Dragginbutt's comments on a chest protector distributing shock throughout your upper body instead of just one small area. I've had my old Polaris Scrambler on top of me before when I endoed down a hill. A lot of weight on top of me, but I didn't feel stabbed or anything. The protector did it's job. I won't ride without one.
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Brian -- Faribault, MN
- '07 YFZ450 * AC Pro Peg Nerfs, Full PRM Skids, GYTR Intake, HMF Sport Pipe
- '00 Scrambler 400 4x4 * RcR Stage 1 Kit
- '90 YZ250 * RaceTech Suspension, FMF Pipe/Silencer
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