Please take a moment to tell us which 3rd party trackers you use.
OH man, if I could plug in my bodybugg info into CC i'd be so thrilled! their food tracker SUCKS so badly.
Agree with above poster! The only reason I use my fitness pal is because it syncs with my bodymedia.
I use fitbit
I'm thinking about buying a fitbit, it would be nice to be able to link to CC.
but to answer the op, none.
none. i use runkeeper to plan routes and track training, and i'm considering a garmin (too bad they're so fricken expensive and ugly. one or the other i could wrap my head around...) but i have no use for the others. i have a HRM that i haven't used in five years. i just don't like carrying extra crap and having gadgets attached to me.
and nike+ just pisses me off. i can't help but wonder how many people are out there running in the wrong shoes just so they can have the privilege of paying extra for that?