I really like these strings. To my ears they aren't quite as zingy as the regular Rotos when first put on (although it's hard to be 100% sure), but they do seem to hang on to that tone for much longer. I also find they have better string-to-string balance, especially the low E which with the regular nickels I felt was a little plummy at times - like it could do with being a gauge heavier. Are they worth the price though? That's really up to the user. For me the answer is yes, it's exactly what I want out of a set of strings (and as a bass player they're actually quite cheap compared to a set of bass strings!). I just wish Roto did these in custom gauges, as I use a non-standard set for my 7-string guitar, and that means buying the Ernie Ball 'Classic Pure Nickel' ones instead.

I have been using rotosounds for a few years, best strings ive found although its always quite subjective as ive not come across many poor brands apart from freebies with guitars etc. I use 10s for my prs 513 and it sings out and has lovely tension on bending, im not sure if theres a massive life difference between these and standards but after 5 weeks of daily playing and teaching they come highly recommended as im just ordering 2 new sets!