I bulid up the VB-R-168 in 58
188 cm with 92 inseam
which is quite long due to the curved handlebar (440/120), thinking about switching to a straight one,
Bike rides great, mounting without any problems
but next time i would go with the 177 because of the seatpost,
the aero seatpost from the 168 is only availabe with 20mm offset, and till know i haven't found any other seatpost fitting which limits your flexibiltity in bikefitting
Quality/price relation is definitly a buy