Electrostat - M-L; Quad or Soundlab - reliable

Looking for the best electrostat that is reliable. Seems as Soundlab sounds the best performed, but is the most unreliable; Quad is second best performer - very safe - easiest to resell but also unreliable. M-L third, but maybe the most reliable.

Is the reliability issue due to people playing "Pink Floyd at 100 dB" or is reliability also an issue for us 80 to 85 dB people?