carosn -i'd say it's much better to have extra slack in the cable than tesion. whether you get that to work in practice is harder as you'll have to shift up then up again (maybe twice) if you go down by accident - i know they can be a pain, indexing the front mech can be a pain even with all the 'correct stuff'. i can often get a mech to work on a triple with only 3 positions being need, despite what cog the chain is on - so i'd find the trim to be superfluous. and there's tons in there to break. bar end levers (with a felt tip mark showing the position for the middle ring ) all the way for me
carosn -i'd say it's much better to have extra slack in the cable than tesion. whether you get that to work in practice is harder as you'll have to shift up then up again (maybe twice) if you go down by accident - i know they can be a pain, indexing the front mech can be a pain even with all the 'correct stuff'. i can often get a mech to work on a triple with only 3 positions being need, despite what cog the chain is on - so i'd find the trim to be superfluous. and there's tons in there to break. bar end levers (with a felt tip mark showing the position for the middle ring ) all the way for me