ORIGINAL: imperviously

Hello, recently i've been wanting to pick up 2 new batteries for my sc10, im running a 13.5 sensored novak motor.
I have been looking into batteries and such, and there are two brands im willing to buy from. Gforce and Gens ace. The thing is, Gforce has their 2s 5000mah 25c for only $17!!, and the gens ace 2s 5000 mah 40c is about $33. Plus i kinda don't want to have to get gens ace and need to resolder it because i use deans plugs.

Honestly, will i see the difference between the 25c and the 40c that greatly? Should i get the 25c, and save a GREAT amount of money, and use it towards other upgrades or new tires that i will be needing soon anyways.

The whole 25c vs 40c. i understand that obviously more C rating is better, but the 25 and 40, will i actually be able to tell a great deal difference to where its almost double the price?