for 3/32" chains i really like the sram pc-69. i run those on my mtb and trials bike. i've found them to be rather durable, especially considering i'm bad at keeping my mtb clean. i absolutely love the wipperman connex 10x1 on my road bike. all my fixies have 1/8" though. i usually use a sram pc-1, but am probably going to try a pc-7 or a wipperman next.