What would you recommend for urban trials? Mavic EX721 CD, 28mm wide, 590grams or Alex DX32, 38mm wide, 720grams, rear of course. DX32 is 15$ cheaper but I am troubled by it's weight. I plan to run Michellin Hot S 2.5. Also do you recommend 36 or 32 holes and how should I lace it?