Anyone flying with RT 6250s?

[purduephigam]

I took this as a recommendation, but am finding myself having to add more weight to my jets in order to properly balance with a heavier pack. Is the added juice worth the extra weight? I feel I could easily be convinced to sell these and just buy more 5000 packs. Any input is appreciated, thanks!

[C17loadmaster]

I used a 50c 6k mah once to see if it was a better fit in the F-15 and F-16. I immediately went back to the 5k batteries. The added weight makes them fly heavier with no additional flight time. I only use my 6000s in twin 70mm planes