I agree with the wattage class. Now that I'm at 10 speakers there is no way I could keep up.
There will never be a "watts" class.. Its sad , but people cheat. They will say 1500 watts and really have 5000.. They don't have time to remove fairings to check out all the bike in the competition. If they did, that would be more interesting. Would make the builder put more thought into the system/design....