We just got two bettas And put one in each of our ten gallons with our bubble heads. They really seem to be enjoying themselves. We don't have any aggresive fish in our large tanks because i took them out and put then in a holding tank. now all the bullies are together and none of them fight or pick on each other. I agree that bettas need to be in a larger enviroment. It is just cruel to keep then in those small bowls. Add plants too bettas love to hang out in them.

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3 Ten gallon tanks
3 Bubble Heads
5 Comets
1 Betta
1.5 Gal tank (AKA the Naughty tank)
3 Comets