i honestly don't know, i got both sets 2nd hand. they both have never been clipped at the ends, they both may have a little silk worn through at the peg end, but they're all solid, and they all perform like good old Thomastik strings (last forever, in my opinion).
a brand new set solo Superflexible runs about $150, solo Spiro almost $200 these days. a new set will sound a lot like these sets in a few weeks. in my humble opinion
