The difference out of the package is noticeable. The Sunbeams have the usual NPS roundwound tone. And I agree with what has been said about sparkle, there is definitely some clank up top. The Pure Blues, on the other hand, are more middy, a bit less bright, and I'd say also a bit more complex...probably from the mids having more presence versus the Sunbeams. I have a set of each (45-125) on 35" scale fivers currently, and I'm curious to see how the Pure Blues age in particular. I'm a long-time Lo-Riders stan, but I've moved toward Fender 7250Ms recently as I like the bump in mids and relative lack of "sparkle." The Pure Blues are therefore similar...I just wish they had a hex core!