I am in the process of buying a folding bike to go to work. The current one I have is too slow & heavy. I need something fast in terms of speed & lightweight. I'm 170lbs & 37 years old. My current candidate would be either the Dahon Matrix or the Dahon Speed Pro & possibly the Speed Pro TT. Which one do you think is faster? Which one is more suitable to conversion? Both have aluminum frame. The matrix has 26" wheel @ 26lbs and the Speed Pro has 20" wheel @ 23lbs. Or are there any faster folding bikes? I will be putting the Phoenix motor from ElectricRider.com (X-Lyte 5303) and possibly using the 72V Cystalite 40A controller. Any suggestions if money is no object?