for me i would like to see your results and distance in which races you compete the birdage would,nt matter so much as you can only beat whats infront of you . also i would like to know the strain of your doos provided you did,nt have to much different strains in your loft if it was the kind of doos i was after i would then think about it .before anyone puts up location i dont think it matters after we reach the 300 mile mark jmo.