So we have been thru 2 pair of DC boots and one pair of Nitro's. for our son who rides about 4 days a week. As for the DC boot one broke the integral lace system and one just did not fit right (model=scout) The DC scout with boa system was too tight at the calf leaving the toes loose, not great. The other DC boot with broken laces were great and they sent me a new lace pack for them. Just to let you guys know you can relace them and it took me about 2hours on one boot not great. That brings us to the Nitro with two zones to tighten it hold the toes and keeps the calf inline.