Routine PCR is typically performed with Taq or a Taq-based blend of polymerases. that provides enhanced performance. These blends often include a proofreading polymerase that provides enhanced performance and moderately higher fidelity (e.g., 2X) than Taq alone. In cases where true high-fidelity is required, a robust proofreading polymerase (i.e., Q5®) should be used instead of a Taq blend.
For best PCR results, please follow the recommendations that come with each enzyme and calculate an annealing temperature for each primer set using the NEB Tm calculator. For most Routine PCR experiments, limited optimizations are required to achieve reproducible and robust results.