How good are these NeuEnergy or Neumotors Lipo's ?

[Finnster]

As linc said, you are not going to really tell a diff in punch between the two. I would just go by what fits your app better. The 2500 cells are good (I have some) but they are short packs and somewhat tall. The others will lay flatter.

The 2500 packs is what got my crt.5 past 60mph. Either those packs will get an 1/8th to 50 if the motor and gearing is right.