I like the auto-siphon http://www.northernbrewer.com/shop/auto-siphon-5-16.html
but the plastic racking cane tends to get brittle and break over time. I know this because I have 2 working ones and 3 broken ones which I use for parts.
I just found out that a stainless 3/8 inch racking cane fits snugly into the cut off portion of the bigger, plastic racking cane. I cut off the bottom 1.5 inches of a broken plastic cane (the end with the rubber plunger) and stuffed the stainless cane right into it. Better than new.