I've tried SR2000's, and for my money, GHS contact core super steels are better. But better is completely subjective. I should say that the contact cores have a barely noticeable high end boost over the SR2000's that's pretty much negligible, but I've had problems with two sets of SR2000's in a row where I get a warbling sound if I don't lower my pickups (and I play with my pickups lowered pretty well,) and I've never had that problem with the contact cores. Nowhere near as bad as the shrill sound you get when you try to use DR Longnecks with a bass that doesn't have a through body stringing design, but it was there.