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It seems better, but requires knowledge. I looked at it before, if you are clueless about muscle groups, musclewiki doesn’t help you at all.

This has workout regimes you can follow, which is very important. A combination of both would be best ;)

MuscleWiki is cool, but it's not very helpful during a workout. I like that Darebee builds a set of routines and includes a timer into each routine to keep you on track.

Gah, I wish sites wouldn't call themselves "wiki" if they aren't a wiki!