Whatever bikes you currently have-Ride them. It will take a while to get your fitness back and if you work hard enough should be by the end of Summer. Keep the bikes running and decide what you need in a bike- different size- different style- better components.
Then come Autumn and the 2012 bikes will have to be shifted by the dealers at a good price for you. By that time you will have found out that your current bikes do the job you want from them- OR NOT.
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How long was I in the army? Five foot seven.
Spike Milligan