Gonna bump this YEARS later to ask yet again if you've tried the Dunlop SBN yet
First time user myself, and also on one of my darker basses I was looking to brighten up (gotta love them rosewood boards...)
Have to say I'm impressed! Though I am someone who enjoys lower tension. Head to head with the infamous XLs here's my comparison:
XL: Stiffer, overall brighter, ages faster and decline sharper (but not nearly as fast as EB), more articulate, piano like tone that can really sing.
SBN: More balanced sound. Less overall highs, but still enough detail to keep me interested. Less coarse texture, but with enough gripyness to not be slippery. Still sound nice as they age. Also, on a weird note, they SMELL amazing
These two will probably be my go-to strings going forward. That is, if I ever get around to trying the GHS Bassics that also seem like they should be on OPs bucketlist thanks to the description of a few renowned TBers.