It will depend on your scuba diving needs. If you are only looking to go scuba diving once or twice, or you only go on dives when you’re on vacation, it may not be worth the investment to purchase your BCD. But if you happen to love scuba diving, it can be worth it to eliminate the hassle of rentals and invest in your scuba diving gear. There is also the benefit of muscle memory if you use the same design for each dive. The best beginner BCD will be an investment, but for frequent divers, it is often more beneficial to own rather than rent a BCD.