There certainly are alot of speaker options out there but for the quality-price thing, Axiom is amazing. That being said, Axiom speakers do not produce a 'slam' bass type sound, certainly not the kind that the DM603 does (i have heard these).
However the Monitor Audio Silvers and Golds do have a bit more bass and truly superb upper end. There cost is just a touch more than Axiom based on recent quotes.
This might be a route you should consider if you have ruled out the concept of using a sub for the slam bass you are hoping for.
Here is
a link to a personal review of some speakers i went to audition recently. Maybe there is something in there that may help.
