I got a set of 3 piece links from CRC... they are nothing like the speedmerchant units.. They are much smaller and lighter than the sm pieces.
The guys at CRC say it's driver preference with regards to the links. The top European driver at the Snowbirds with a Knife used the stock one-piece units in the A-mod main. The top CRC stock driver also used the stock one-piece units. I swiched back as well.