I would consider these as the first "real" set of strings I purchased. After doing some research I realized a lot of the players I really admired when I was starting out played Rotosounds. I'm not one to copy directly off another player but I figured if this many pros used Rotosounds that Rotosound must be doing something right. Like mentioned earlier, I have yet to find a string that has felt better in my hands than these do. They seem to be a slightly smaller gauge than what comes stock on Fenders. Not enough to really create a tonal difference but just enough to increase playability. As all strings are, they are bright out of the box and took quite a while to "deaden up". I like the sound of "dead" strings because I dislike excessive string noise (I currently play Roto flats to remedy this problem) so this a problem for me but for anyone who likes bright strings, these stay bright for a while. I have a set that is a few years old and still play amazingly. All in all, these are a great set of strings for the money and I advise everyone should at least try a set out for themselves!
Rotosound RS66LD Long Scale Swing 66 Bass Strings