Whe else is not afraid to mix parts frim different groups? My only real demands are that the brifters are metal (105 or better) and the rear derailer is precise (105 is okay, Ultegra or D-A are better). It goes without saying that the cassette should be at least a nine speed (sora what, heck I like the SRAMs anyway). Other than that everything else is good enough for me at any level. Ir ride a double chainring so nearly any front derailer will do, and good calipers can be found outside the big two for a savings. Heck, look no furhter than the Harris Cyclery kit for inspiration, they pick from both sides of the fence with good results. With sponsorship/partnerships as prevalent as they are and pricepoint marketing I am not surprised that the matching group mentality is so widespread. Anyone else care to add their thoughts on breaking free of the distinct group level mentality?