Felix (a contributer here) would be best to answer that as he has a resent, well relativly recent Sonor set up, "IM" him if he doesnt read and respond to this.
I have owned a Sonor kit for the past 15 years(my kit late 70's) and I have NO complaints.
They are built to last though rather heavy. Sonically I would say that they are not as cutting edge as they would like you to believe as many other top kits equal their sound but maybe not to the point of sounding the same (?)

. I think Both Sonor and DW's(rather than thin shells) still go for the mult-layer Multi-wood shells and I suppose that gives them a unique sound.
Again, not highly detailed as my kit is pre-Jurassic but i'm pleased and I dont please easy.....
Hope that helps
