TSawyerLV

I ride a 2018 Roubaix. I want (not a need) electronic shifting, a different seat post (I question the effectiveness of the “Cobbler Gobbler”), a power meter and carbon bars. I have mostly decided to go Di2. What makes more sense, upgrading my bike or buying a new bike? My research shows upgrading is the cheaper route, but not by a lot relatively speaking.

Leinster

If you want to choose your seatpost, carbon bars, and PM, then upgrade.

If you find a stock Di2 bike that has the exact bars, stem, seatpost that you're looking for, and comes with a PM, (which is also the PM you're looking for) buy.

bonsai171

Handlebars are a very personal choice, and I would say definitely pick ones you love. Got three different drop bars on 3 different bikes. Got a Bontrager bar on my road bike, and that is my fav. You might be better off starting with your existing bike if it fits well, and add the seatpost, bars, and DI2 you like. Guess it depends on how much you like the bike. Sorry if this is sounding like a Marie Kondo add LOL.

Dave

rubiksoval

Problem with buying new bikes is having to replace all the parts that don't fit/aren't what you want.

So with that in mind, out of those two choices, I'd say upgrade.

I'd personally buy a frame/fork and build it with everything I want. Then no need to upgrade/replace, etc.