Originally Posted by
CliffordK
If you read above, and watch the videos above, 105 is fundamentally different than Ultegra (Hollow Forged vs Hollow Bonded). And thus so far seems to have lower failure rates.
Reading all this makes me happy that I have 20-year-old Ultegra cranks. They're hollow forged, and I think they look better as well.
Ultegra with a more traditional appearance.