Road New Shimano Dura-Ace R9100 Groupset

Officially Triple, but I also have a 105 at the back

 

I have full Shimano 105 on my road bike and a full XT on my trekking bike.

 

I might go for the crankset + power meter

 

Here we go
Campagnolo Record/Chorus mix 2x10 (non spec crankset*)
Campagnolo Athena 2x11 (non spec crankset)
Shimano 105 / Dura Ace Bar end shifters 3x10 (non spec crankset)
Sram X9 with Bar end shifters (non spec crankset) - Trike
Shimano Deore 3x9 with Bar end shifters (non spec crankset) - Trike
Shimano Deore 3x9 MTB
1x1 pick n mix parts


*I prefer square taper BB's for durability and cost

 

Crankset Chainwheel: Shimano Tiagra 10spd 12-28
Crank: FSA Vero Compact 50/34

 

Cyclo-Gravel-Road bike (All City MMD): Shimano 105 10spd shifters/rear derailleur, Shimano CX ft. Hayes road disks, FSA crank 46/36
Classic Road (Waterford Paramount): Full ~1990 Shimano 600 Ultegra 8spd w/indexed downtube shifters
Mtn Bike (Surly Krampus): Shimano SLX 1x10 w/ Wide/Narrow chainring(no chainguide required) Avid BB7 mechanical disc brakes
Touring Bike(Surly LHT): Shimano 9spd (XT, 105 mix) w/ friction bar-end shifters, Sugino triple crank, Shimano CX cantilever brakes.

Though I know it saves a little money, I hate how most off-the-shelf bikes use so many mixed groups. When my chainrings wear out on my All City, I'm going to pony-up for a 105 crank. Plus, the lower CX gears are not really necessary for me since I just ride it on roads and light trails.

 

My winter/hack bike has a 105/old ultegra mix plus a few hand me down bits from old bikes. 105 is a real sweetspot IMO. Inexpensive enough that you don't have to remortgage your house to replace stuff. Bombproof and performs almost as good as the top end kit. I never fail to be impressed by it.

My everyday ride has Ultegra with an old FSA carbon crankset

My best bike is DA9000 throughout. There's no denying the incredible performance of shimano's top end kit but as the years go by i think the delta between DA/Ultegra/105 is getting smaller so it's a lot of cash for what is an increasingly marginal gain - especially as i get older and slower .

But that's the entire nature of the cycling industry I guess