What is the difference between the Miken bats?

The new Miken MXB bats, Psycho and Nemesis. I want to buy one, but I do not know what is the best. I bought a ultra 2 bat is great, do you know if the new bats are better?

First I opened the Psychosis and Nemesis. Both are good bats. But none of them are Ultra II. Secondly, what the league allows you to use an Ultra II? These were banned in all associations, except for the Aging. So if you're in the last year would continue using Ultra II. It is one of if not the best bat ever made. But if not then I would go with Psycho, its very hot when you broke in. But I do not think that can be used in ASA. Only USSSA and NSA.

Miken nemesis rolled Demcatsbatrolling@yahoo.com demcats bat rolling