New bike decisions

As I'm now almost recovered from being t-boned at 30mph by someone who came onto a roundabout without stopping, I'm trying to decider what to replace my old "good" bike that was extensively modified (like me) by the collision. I've sort of finally made up my mind about the frame and am going for a Casati Demone. However I am now faced with a couple of decisions.
1. I've always ridden Shimano Ultegra but I somehow feel it might be fraudulent putting anything other than Campag on an Italian frame. I know that's nonsense as many of the pro peleton have Italian frames with Shimano but just my gut feel. Complicating this is the economics. I am going electronic and I can get Ultegra DI2 for less than £900 which is a considerable discount compared to Chorus EPS. My understanding is that Ultegra is somewhere between Athena & Chorus so I wouldn't like to move down
2. Also given the increased availability of road bikes with disc brakes, should I consider them ? This is another question that has esoteric bias as I'm afraid they look good on my MTB but I think they just look ugly on road bikes. I've never used carbon rims (the new bike's wheels won't be either) and my understanding is the braking issue is more pronounced on carbon. To be frank, despite having cycled tens of thousands of miles over the years including some very long descents I find modern brakes on alloy rims reasonably effective. Maybe if I were to try a bike with discs I might change my mind.
Thoughts please. I've you're going to reply, try to be as objective as possible as I know how ridiculous the groupset thing can become. If someone makes a compelling case for SRAM then I'd consider that too but the electronic version is over the budget I'm looking at to be honest. The brakes issues again just needs someone to make a compelling case.
I don't probably don't need emotive replies as that's probably what's got me in this situation as it is !
1. I've always ridden Shimano Ultegra but I somehow feel it might be fraudulent putting anything other than Campag on an Italian frame. I know that's nonsense as many of the pro peleton have Italian frames with Shimano but just my gut feel. Complicating this is the economics. I am going electronic and I can get Ultegra DI2 for less than £900 which is a considerable discount compared to Chorus EPS. My understanding is that Ultegra is somewhere between Athena & Chorus so I wouldn't like to move down
2. Also given the increased availability of road bikes with disc brakes, should I consider them ? This is another question that has esoteric bias as I'm afraid they look good on my MTB but I think they just look ugly on road bikes. I've never used carbon rims (the new bike's wheels won't be either) and my understanding is the braking issue is more pronounced on carbon. To be frank, despite having cycled tens of thousands of miles over the years including some very long descents I find modern brakes on alloy rims reasonably effective. Maybe if I were to try a bike with discs I might change my mind.
Thoughts please. I've you're going to reply, try to be as objective as possible as I know how ridiculous the groupset thing can become. If someone makes a compelling case for SRAM then I'd consider that too but the electronic version is over the budget I'm looking at to be honest. The brakes issues again just needs someone to make a compelling case.
I don't probably don't need emotive replies as that's probably what's got me in this situation as it is !
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I have Ultegra Di2 on the new bike that I haven't had a chance to road test yet, but all reviews, comments and experience of friends say it is the way to go, but on the other hand if you don't try it you won't miss it so if you go italian mechanical you'll be just as pleased with the result on your italian bike, either way enjoy!