I'm looking to make a cab purchase, and I've been considering Ashdown. I'm particularly interested in the ABM410T and the ABM414T. What's the major difference between these two cabinets other than impedance? Do they handle a B string well? How loud are they and are the speakers efficient? How would you describe their sound (I'll be using a BBE unit for my pre)? I'm looking for a cabinet that is clean sounding and really sings in the low-mid range. Please tell me your experience with these two cabinets. I did a search, and I really couldn't find any information on these two cabinets other than people saying that they owned them. Thanks.