From what I've learned... Red shifters are worth the extra. The red front derailleur is no good because it's not stiff enough... get Force. I think I also heard that Red cranks aren't as stiff. Red rear derailleur is similar to Force except for a little weight savings and ceramic pulleys (I heard they save one watt). As for brakes, I think the only real advantage is weight. Oh and the Red cassette is really nice too. It's light and durable.