Aguilar make fine cabinets, let me just say that, incredible build quality, sound and reliability I have found. They (Aguilar) quote the DB series as a whole as being more mid range present,
http://www.aguilaramp.com/products_cabinets.htm
I have found this to be correct. The DB's are covered in coloured tolex whereas the GS cabs are carpeted.
I use the GS412 and the GS410. Neither series is better or worse, just depends on what YOU like?
You can't go wrong really IMHO.