I have a set of these I bought the from the zeb about 1.5 years ago. They are the HD series but the mids have carbonfiber cones, they sound great to me. However these were my first and only comp set. It does seem they somewhat lack in the midbass department. Should I just add some 6.5 or 8" midbass drivers or are there some better comp sets out there with better midbass?