Rear / Front Derailleur Question

sonny73 Posts: 2,203
edited March 2010 in Road buying advice
Currently I run a Shimano Ultegra, short cage rear derailleur.
I'm look at investing in a Dura Ace version, so should I ensure I get a short cage again?
I run a SRAM OG-1070, 10-speed 11-28t cassette if that helps.

Also have a Shimano 105, braze-on clamp, bottom pull front mech; so I assume I should go for the braze on version in Dura Ace too and not the 34.9mm band-on type?

Feel like I should know but simply I do not, so any guidance is greatly appreciated.
Cheers for any advice.