Synergistic Power cords for the MC402 amp?

Hi, I have a Synergistic T3 power cord on my MC402 amp and I'm wondering if any one has compared the different Synergistic Power cords for this amp or the 452. I'm specifically thinking of getting a Synergistic Research Hologram A or a Synergistic Precision but I'd get them used so I'd like some guidance before I spend the money. I'm running the power cords into a Synergistic Powercell 10se. Thanks.