Di2 one or two button timetrial bar end shifters?

[htc]

Upgraded to Di2 and not sure which bar end shifters to go for..

http://www.wiggle.co.uk/shimano-di2-11- ... -switches/

or

http://www.wiggle.co.uk/shimano-dura-ac ... -shifters/

I have the new BT-DN110 battery and am planning on picking up the EW-WU111 in-line bluetooth unit too (if synchro shifting is required)

What do you guys see as the advantages and disadvantages of the two shifter types and does anyone have experience of using both?

[Nefarious86]

Do you need to front shift on the skis??

[toiyuet]

If front shifting isn't necessary, buy the DA on CRC at £93 now, because new model is coming.

[htc]

I guess I should have phrased that better - are there ergonminc differences and have you tried shifting just with one hand for rear shifting or using one hand for up and one hand for down?

[NiFTY]

If you are running ski bends i like the two button controls as you can do all shifting with your right hand and use the left to just overwrap both. If running flat or j bends i would run the da as i found i liked the inside of the bar to hold myself down on those extensions.

[NiFTY]

If you are running ski bends i like the two button controls as you can do all shifting with your right hand and use the left to just overwrap both. If running flat or j bends i would run the da as i found i liked the inside of the bar to hold myself down on those extensions.

[htc]

Makes sense, that's kind of what I was getting at. You hold both hands overlapping each other almost between the bars then? I like to do this as it feels more natural creating a single central wind break..

[audiojan]

It's really a personal preference. I prefer the two button (although I have switched to my preferred Campy EPS instead as of last season), but most of my friends prefer the one button setup.