Originally Posted by
seymour1910
well, one person said that. IMO after riding both I don't think 6700 (Ultegra) is better than 5700 (105) other than weight. If both are tuned correctly they shift the same. If it were 6800 I would say jump on it.
At this point I would say ride both and see what you like about each. The group will not matter if you hate how the bike feels.
Are you taking into account that one is 105/ultegra mix and the other is tiagra/105 mix?