Thunder Power Question

[srislash]

I'm gonna be needing a couple sets of batteries for my new Shocker 950 twin.I have some Thunder Power G6 45c 5000mah's that I'm happy with so far.I'm thinking 6600mah 5s & 6s here as it will be one battery per motor.I have found some G4 45c 6500 brand new in Canada for a real good price(online).So the Question is has anyone got G4's and upgraded to G6's and noticed a difference?

[srislash]

No experiences or opinions?I only ask as it will be a bit of money to lay out but I have been finding a difference in charging quality packs as to "cheap" packs.