you got one, ever rode one? please share your thoughts, feeling, likes dislikes. i been riding a rigid, now nearly antique merlin, rigid all the way around, for too long. i am thinking about finally updating. endless climbs where i live, and fast, not too rocky, or drop-y descents - it seems the zirkel would be a more forgiving ride for my aging body. it has been hard to find any feedback on this ride, so if you got some please share. thanks.