I had 6's before I got my 7's and always felt the bass just overwhelmed everything. However, the 8's bass is perfect but I guess that a lot of the more than double power 300w vs 750w of the 8's is used to process the output rather than just being louder. In fact I mostly listen at 60 rather than the default of 65 with the 8's.

DSP8000SEU, DSP5200HC, DSP33, DSW1500, 808v5, 861v4, WiiM Pro+, Panasonic 55" Plasma, DMP-BDT700 Blu-ray,
MECOOL MEon1, Russ Andrews Signature Power Block, UltraFuses, SuperFuses, Kimber Signature PS Interfaces.
Prior: DSP7000.2, DSP6000.2, DSP5000.2, DSP5000.2HC, 508.24, 568.2, 596, G98DH & G68D.
Jaguar F-Type; Meridian 770W Surround System