Is there any difference between the Nokon and Metawire cable housing systems? Both of them look very similar to me, but I am not sure about the exact weight. Is there any different in shifting performance between the two? I found the Metawire to be slightly cheaper and might go for that. Thanks

Welcome to the forum, but you should Search before you post "new" topics: here's a similar very recent thread:
http://weightweenies.starbike.com/forum/viewtopic.php?t=1708

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"Gimondi è un eroe umano, che viene sconfitto ma che continua la sua corsa fino a tornare a vincere." - Enrico Ruggeri

Sorry about that, I didn't realize that there is a search function and thanks a lot for the help.

No problem, you might check out Jagwire too.
http://www.jagwire.com.tw/frame.htm

_________________
"Gimondi è un eroe umano, che viene sconfitto ma che continua la sua corsa fino a tornare a vincere." - Enrico Ruggeri