Shimano Alivio with Sora compatibility I have Giant Defy 3 2012 and I want change handlebar from drop down to straight. 
I wonder if I can use Shimano Alivio M430 3-9 shifters with my front and rear Sora derailler. Thanks for advice
Don't know if it helps,... but I use Sora shifters for Alivio rear derailleur (switched bars from straight to drops).

So I would think they are compatible.