On the SuperX I was rolling with a 40T front and 12-40 on the rear. The Jamis I'm riding now is a 50/34 and 11-36. I'm fat and we have lots of climbing here in WV so I need all the help I can get. I'm hoping to eventually add either Di2 or e-Tap shifting to my bike eventually. I'll probably do it the cheap way and add blip shifters since I already have hydro discs...I don't think I want to deal with the cost of having to buy all new brifters and brakes. I'd prefer mixing the e-Tap with the Ultegra brakes...I think that would be a killer combo. I need to save the money but also wait for SRAM to come out with a longer cage option so I can still use a 36t on the back...or at least a 32. According to them...it's something they are working on but I don't know the capacity. Perfect world will have them coming out with a mountain bike setup soon that can accommodate huge cassettes to give lots of options.
Well, having tried Di2 recently I can safely say that it's something of a game changer. I'm not necessarily one to look at the arrival of electronics on bikes in a pleasing way, but Di2 actually felt like an improvement over mechanical in terms of man-to-machine operation.
The mechs simply did what I told them to, when I told them to, and while providing enough audible feedback to let you know about what's going underneath. I'm still worried about electronics going wild at some point and forcing me into 53/11 as I climb a 10% gradient, but at that point I'm willing to deal with it in exchange with that lovely shift.
Ultegra's quite attractive, at around 1.5K with hydraulical discs. Will take a 32 on the back, too. Functionally indentical to DA, only 300 grams heavier (200 or so of those probably coming from the crankset alone...), a whole grand cheaper.
Couldn't we simply find cheap hobbies ?