groupset

Hi Everyone, I'm new to the forum and was hoping you guys can help me out. Looking for expert advice here :) I have an older (but awesome) 2012 Tarmac Pro SL4 Mid-Compact Ui2 (first gen) bike which I want to upgrade to Di2 (among other things to save weight, battery life and climbing ease)...

Hi All Does anyone have any opinions on whether it is better to buy a new bike with Ultegra Di2 or Dura Ace mechanical please? I know it's personal preference etc but just wanting to get some feedback. I enjoy cycling, cycle twice a week outside (and another 2-3x indoors), do 70-100 mile...

Deciding to get either 2016 Specialized Allez DSW Elite (Tiagra) or 2015 Felt F75 (105), both are on sale from 2 different LBS..price difference of $100 more on F75. Is there really a noticeable difference with a '15 105 groupset and '16 Tiagra? I really like the F75 geometry, but my neck and...

Hello, There's one 2nd hand bike up for sale which I'm quite intrested. But its components is made up of the old Shimano 600 groupset. I'm not sure if that groupset is good. Can it be compared to any of 2005 Shimano groupsets? If so which? Is it worth for me to get the bike with that...