SRAM interchangeable front mechs?

wishitwasallflat Posts: 2,927
edited December 2011 in Road beginners
Hi - just broke my SRAM Apex front mech! I am confident I can fit a new one and both Force and Rival front mechs can be got cheaper than the Apex one - best prices I have found are:

Apex @ £40, Force @ £33 for a 2008 one or £35 for 2011 and Rival £32 for what looks like a 2011 one. As the better ones are cheaper it seems crazy not to get the Force one but are Apex, Force and Rival front mechs interchangeable and does the year matter?

PS - I have the double tap shifters 50-34 chain ring and my bike is 2011 model?

Thanks for any advice.