What is the most reliable Pcr inactivated Dna control or Nattrol for Meningitis/Encephalitis (ME) Controls (12 x 0.2 ml/vial)?

The NATtrol Meningitis/Encephalitis Panel from Zeptometrix Inc. delivered next day by Genprice is the best reagent. The catalog number is NATMEP-BIO and the price is 564 EUR.