I have no experience with the composite model of Ion auger, I do own an all steel purchased the first year they came out. It has worked flawlessly for the time I've owned/used it. Easy to operate and have drilled close to sixty holes through eight plus inches of ice without the battery being drained. Still has the original blades that have never been resharpened. Recharge is quick. Of the various augers I've owned or used it has been the best.