Subjective. I prefer 6700 over all the previous generations.
The problem (and as said Shimano acknowledged) is that running the cable run under tape for shifting was comprised if the bend radius of the cable following the bar was too tight ..
@Oswald started
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The problem (and as said Shimano acknowledged) is that running the cable run under tape for shifting was comprised if the bend radius of the cable following the bar was too tight ..