trek pilot wsd 1.2 vs 2.1
hello. I am buying my first road bike and I think I have it narrowed down to a trek wsd pilot due to its uprght design. I have some shoulder problems and this style feels more comfortable to me. The big question is should I splurge for the 2.1 as opposed to the 1.2.? I am wonderng how much of a differece having the seatpost in carbon(2.1) vs alum(1.2) will make. My LBS only carries the 1.2 but they will order a 2.1 for me, but then i won't have a chance to test ride it first. Any thoughts??