The big advantage of the Hyperion chargers is their capacity. Some models have over 500 watts or 20 amps max. of charge output power per channel. There are other chargers that look great until you realize that 50 watts of charge power means you will be charging a 4S pack at 3 amps. I consider the ability to charge two 4S packs at 10 amps each to be important if you seriously race electric boats. If you're racing with gas and nitro classes, there won't be a lot of tolerance for long charge times. You either invest in fast charging or lots of batteries.