I'm using a Hartke 5000 for my bass head and want to bi-amp it. Have a B210 for the highs. Which cab would be best for the lows on this setup, the 1X15 or the 4x10? I play crunchy rock stuff with an old Gibson Thunderbird and need a solid low end. Which cab is going to put out that 'break your ribs' low end and move the most air?