The Nexus E4 is built for recreational and developing players wanting Nexus feel without elite pricing, while the Proto2 targets advanced players demanding top-tier performance and weight savings.
Verdict: Pick the Nexus E4 if you're a recreational player, parent buying for a growing kid, or budget-conscious player who wants decent Nexus characteristics. The wider flex range covers more players too. Pick the Proto2 if you're an advanced player who values every gram saved, plays frequently enough to justify the cost, and wants maximum shot versatility from a mid-kick stick.
Bauer
Nexus E4
Bauer
Proto2