I've never used Dillos,but I've used three different Flak Jacket models(old/new All Condition,Infinity,Nimbus) with zero flats. I've heard some Dillos don't do well in the rain,and I can tell you from experience in helping a friend that they're a pain to mount/remove. Zero probs with Flak Jackets. I've also had nothing but good experiences with Vittoria Randonneurs.