Honestly your original post was like the ones we get here all the time, which grouppo is the best? Having owned two of the three i can say this with some authority, but then again maybe not. LOL LOL LOL
Campy will cost more. Maybe. I have heard of people here who have ordered it from england and gotten killer deals, like the price i pay for it from my distributer.
Sram Red is lightest. Everone agrees on that, allthough many think the front der is to wimpy. Honestly i cant say yes or no to that, it seemed fine to me.
Shimano is everywhere. Thats a fact, but more and more sram is coming online. However one advantage to shimano being everywhere is replacemnet parts are very easy to come by.
Shifting, Shimano has a very light feel, sram a bit heavier, havnt rode the new campy to say what that feel like.
Brakes. They all brake really really well. Enough said on that one.
Compatability. Lots more stuff aviable for shimano and to a lesser degree sram. Campy is campy. If you like having lots of different wheelsets, there is way more out there for shimano/sram than campy.
Ergonomics. Total personal prefrence combined with how it is set up. That coupled with the fact you ahve two kinds of shimano levers, under the bar cables and exposed der cables then you get two different kind of levers there.
Which is best? Honestly who cares. If you are rocking Red, or DuraAce or Record you are at the top of the food chain anyway. All are equally nice and have fantastic fit and finish. Any rider here would be proud to have any of them on his or her bike.
NOw that is an objective, as i can make it review. Way i figure it is that if Jesus didnt have a favorite grouppe in the Bible then all must be good and worthy.
Bill