Smarti if you are looking for performance and small size I feel the "Best" you can get at this point would be the Epik Vanquish. The Def-Tech will not even be in the same league with the Vanquish. The size is 14.5 squared. It will have true output to 20 Hz, the SC III will not even come close. The price of the two will be very close most likely but one is a VW bug and one is a Ferrari for the price.
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