The standard Shuguang 211s are pretty linear with very good bass but overall dry and not very involving. The premium Shuguangs and Psvane 211-Ts are slightly more refined but IMHO are not worth the premium price. NOS GEs are more lush, harmonically saturated and relaxed but the bass is not very well controlled.
I really love old Shuguang 211B. This was a limited run and unfortunately they are not made any more. They sound dynamic and extended, have very good bass control and are almost as tonally full as the NOS GEs.