Originally Posted by
Sixty Fiver
There are certain designs that favour indexing and some older dérailleurs will not index well but every modern dérailleur will work just fine on friction although with 9-10 speed drives your shifting skills better be well developed as the throw becomes very short.
I was reading in a thread the other day, someone likes suntour barends for 9 speed drivetrains because there's no slapping chain on gears.. he said something to the affect of because of the tighter spacing, it just goes right onto the next gear.