My Beyers definitely have more punch to them, and my CALs good lord do they have bass.
The Maddogs need some power to bring the best out of them, what do you have for a source? My E09K was at just over 12 oclock on low gain, my Maverick was at 11 oclock. The Maddogs are scary because they keep begging you to raise that volume. They want it so badly. I don't suggest it though lol. Hearing damage and all that unhealthy stuff.
Beyers also love power, they don't need it but they sure tighten up with some.
I wonder if you would just be happy with a pair of CALs with HM5 pads. The bass on the CALs is not that thumpy claustrophobic bass of the XB700. It is rich and deep and all for just under 100 dollars depending on where you live and runs beautifully off an iphone to boot. They really area headphone I think everyone should own. Unless you truly despise bass. (Those people exist.)
In your case though I think you really need to hear the Maddogs first, doesn't sound like you have that luxury so I understand why you are really nervous.
Edit: sonitus mirus explained it perfectly. I agree wholeheartedly.
Edited by Hailin - 2/15/13 at 10:25am