I've also got the sora shifters and have bought a pair of paddle shifter STI left new ultegra triple from
chain reaction for £41 ( a good buy I believe they still have them) and right 105 from
ebay for £30.
The thing is during the 3-4 weeks its taken me to aquire the new levers I've actually grown to love the Sora ones as TBH I rarely shift my hands from the hoods.
The thing I cant stand about them is the braking but I'm not sure if that's anything to do with the levers as I've upgraded my brakes canti's to 105 too( £45 merlin cycles for a pair).
Has anyone else found poor braking with Sora levers or is it down to the wet weather we are having? Sorry if I've taken the thread off at a tangent?