Originally Posted by
Aemmer
To me anyways, 600 meant a decent price point on a group set that had maximum function but not quite the bling.
Yes that's right, and I'm pretty sure 600 and 105 co-existed for a while. Eventually, as 600 became Ultegra, it became a high-ranking name with 105 taking 600's original place. 105 is a very sweet spot for function and value.