I've been beta testing the NYXL set and normally use Dunlop SB Nickels.
The NYXL to me have a more defined fundamental and agree with the marketing stuff said on the packaging I just saw on the BSOL site 'accentuated harmonics'.
I'd say they are less scouped sounding than the SBs, but still would suit many playing styles and techniques. Sounded good for finger funk, rock and slap.
I thing they're a good set to check out, but that price is a concern for those no-endorsees and with the competition in the field. I'll post my few samples when I get back to my computer.
Do they feel balanced from string to string?
That is probably the single biggest feature of the super brights, which keeps me coming back. Their tone is great, too. But I have some other favorites for tone, as well. Super Brights feel balanced and easier to play, where others do not.