The Oceanic Alpha 8 Octopus is a top-performing alternate air source at an affordable price. This alternate second stage includes an integrated purge button and orthodontic mouthpiece. The Alpha 8 also includes a limited lifetime warranty with a 2 year service interval. Ideally, this octopus should be paired with the Oceanic Alpha 10 regulator.
If you are looking for a solid alternate second stage without having to spend a great deal of money, the Alpha 8 is an excellent choice.