After using my bike for a year I feel that although I enjoy the simplicity of a single chainring setup, I would prefer a more versatile 2x10 setup and would like to move to it. Currently the two cranksets I am looking at buying are the SRAM Apex White 50-34t & the Shimano 105 5700 52-39t.
What else apart from one of these, a new set of shifters and front derailleur would I need to buy as well, should I also replace the rear cassette & derailleur?