Here is what customers who have tried a sample are saying about Premix Ex Taq (Probe qPCR).
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"I compared Premix Ex Taq (Probe qPCR) (Takara Cat. No. RR390Q) with TaqMan® Universal PCR Master Mix, No AmpErase® UNG, 2-Pack (1 x 5 mL)(Invitrogen cat.4364341) in my qPCR experiment to amplify microRNA. The performance are very similar in my case. Given the better price of Premix Ex Taq (Probe qPCR), I would continue to use it and recommend to other people. I haven't tried SYBR premix ex taq yet. I also tried prime star gxl. It is an excellent DNA ploymerase that can yield descent amount of long PCR product even from template with complicated structure. I would strongly recommend this product for long template cloning especially for promoter region." ~Sichen Li, UNIV OF CALIF LOS ANGELES