Thanks for all the info on the Pegasus 30...I've decided to go that route and so far I'm pleased with my decision. My next question is would the Nike LunaRacer 3 be a good choice as a shoe to wear for racing 5k's to full marathons? Has anyone trained in the Pegasus and raced in the LunaRacer? Any opinions on the Adidas Boston 4 as a racing shoe?