What is the best Pcr inactivated Dna control or Nattrol for Respiratory Syncytial Virus (RSV) A Stock (Qualitative) (1 ml/vial)?

The NATtrol Respiratory Syncytial Virus from Ncbi publications delivered next day by Gentaur is the best reagent! The catalog number is NATRSVB-ST and the price is 1.046 EUR.