i have the DT990 and DT880 and the denons D5k, I'd suggest you go with DT990 Pro + Fiio E17 or E10. I can assure that there's zero difference in sound between the premiums and pros just the changing the style on the premiums to look more beautiful ! but if you can stretch your budget to the D2000, then get them with closed eyes. the bass on these is just what you're looking for ( tight and punchy ) + they're closed headphone + they're only 25 ohms ( doesn't require an amp to shine ).
by the way, take a look at this new headphone from beyerdynamic