I would agree with Roasty.I feel the utopia has the best dynamic driver bass punch. fast and impactful and directed right to the ear drums. but as good as it is, the TC bass reigns supreme.
the beauty of the TC is u can "adjust" the bass, ie rotate the pad alignment, spread out the frame, toe in/out, and even the position it sits on your head can all change the sound to suit you/your mood/the music.
if you want a fire and forget, just wear and enjoy set of headphones, the Utopia will not disappoint.
*edit please add IMO everywhere... LOL
The only thing I would add, perhaps a bit controversially , is that while the TC bass impact will be more fun for most people, IMO, the Utopia has a slightly more natural decay. It's slower, notes linger longer, etc.
YMMV.