CapPack? Do I need it?

[jpoprock]

Hey guys. The only reason I ask is because I'm getting ready to buy a BEC for my E-XXL as I have just purchased a HiTech HSR-5990TG servo. Since CC is having a sale ($25 off of $75 or more), I figured I'd pickup a MotorFan for my 1515 2.5d, and maybe a CapPack. Question is, do I *really* need it? My MarinePower 6s Lipo finally went, and I replaced it on the cheap with a Turnigy NanoTech 5000mah 6S 45-90C pack.

I don't race, and I don't do speed runs. However, I like the best performance possible from my trucks. If it truly helps, or minimizes any kind of fluke damage to the ESC, I'm all for it. But if I don't really need it, I'll pass.

What say you?

Thanks!

Jason