The FDA has now authorized 48 e-cigarette products, and three closed-pod systems dominate the authorized market: the next-generation JUUL2 (authorized August 2026), the original JUUL (re-authorized July 2025), and the Glas G2 (authorized March 2026). Each represents a different philosophy about what an FDA-authorized vape should be — from minimal tech to maximum age-verification. If you're an adult smoker considering a switch to an authorized device, this comparison breaks down the specs, features, pricing, and real-world trade-offs.