What year limited? If it was a Columbus tubed model I would have a hard time not upgrading but depending how light you want to get you might be better off using the $500 to start looking for a used CF machine
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk