+1 for the Ritchey, but I am compelled to mention the recall issued a while back. They did replace my non drive side arm. I see affected cranks listed all over ebay. There's a thread here;
http://www.bikeforums.net/showthread...ghlight=recall
I have two sets running 34/46 with a 12-26 and a bad knee. Works great for me!
-B