Based on the price tags, Anson's is more flexible and has the lowest rates. But if you were to pay in cash, Automatic Centre offers the following discounted prices:
T-651-22X - Php 34,600
N-4601SS - Php 4,750
While it is possible that Avant and SM Appliance may give even lower rates for cash purchases, I did not ask as we're using Ayala Electronic Gift Certificates (E-GCs) to pay for the items.