The initial price difference of tiagra and 105 is very tight, IMHO unless the wheels can't handle 11 speed don't see why would choose tiagra.
This may differ on other countries though.
The difference of the price between 105 and Tiagra become moot when the components are cheaper to replace on the Tiagra.
@edscoble started
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The initial price difference of tiagra and 105 is very tight, IMHO unless the wheels can't handle 11 speed don't see why would choose tiagra.
This may differ on other countries though.