I was wandering around the site and just now posted a thread asking for opinions regarding differences between D'Addario XL Nickels and Pure Blues. If you've ever played the XLs you care to share?
I'm more curious about tension and tone comparisons than anything else.
I played XL170’s exclusively for about 16 years on my modulus 5. They were always available, reasonably priced, and sounded good with that instrument. With similar gauges, the XL’s feel a little more taut under the fingers and give a little more presence in the 1-2k range; the PB’s sound a bit deeper, and the treble range seems to extend higher, but without being peaky or ganky. I like both for different reasons. The feel of the PB outer wrap is a little smoother.

I wish I'd have caught it a bit earlier as I just bought 2 sets of strings and would have definitely got them from Jason if I would have known! So glad to hear this and I will be buying more strings eventually - from Fret Nation!