[steveo]

So, I'm thinking about upgrading my current circa '06 carbon Chorus levers to Record but I'm a bit confused as to the years/vintage/versions of the Ergo levers, with labels like 10speed, Ultra, QS, 10 Ultra/Ultra QS, red print, Carbon BB system, etc.

I have some clue as to what QS is (front der quick shift...whatever that means)...

Could someone break down the years/labels/functions? Is it worth going "Ultra" or "QS"? What exactly is "Ultra?" etc etc etc

Thanks!

-Steve