The superstart extreme agm is a good battery... it is a re-badged Deka, which is a popular battery in the car audio world. For 2600 watts, you would do well to look into a high output alternator, or a second battery for the trunk to prevent clipping. The xspower s3400, or d3400, is an excellent battery. A little on the expensive side, but they are very, very stout.