Best battery?
 

Looking for a nice battery pack, something that I could use on my Mugen mbx5t truggy. It (will) have a a Neu 1515 1y motor, and a Mamba Monster ESC. My question is should i go with 4 or 5cell? ill be mostly bashing, but about 40-50% racing. I dont want to fry the pinions or destroy the drive train alot either, just more power then a nitro so i could smoke them with ease. I was looking at the PolyQuest 4s 6000mah lipo, will this give me enough power and run time?

So i dont have to make another thread, What site has the Neu 1515 1y motor, and the battery In stock? i looked for 4-5 hours for 2 days on google and couldn't find a thing. Also, would the Nomadio react radio with heat sensor on the motor be necessary? so i could monitor it? if not the ESC? And where would i find this radio in stock?
I Greatly Appreciate your time.

You could try rclipos.com for the batteries.
You could order the Neu through Castle if Mike doesn't have them in stock - I just got a Neu 1512/3.5d through Castle and even though they say 2-4 weeks I just got my CC just got charged 1 week later, so hopefully I will see it in a few days.

Get the hardened pinions here and make sure to set the msh just right (not too tight and not too lose - just a little freedom on the gears to compensate for chassis flex) and you'll be fine. These hardened pinions are hard to kill.

1 battery has to be under $325 for the budget

What sort of speeds are you looking for, and what runtime are you going to try and get.

For racing you'd probably want to go with the 4S setup, and maybe get a 5S down the road for bashing. I don't know the gearing on the MBX5T, so I couldn't recommend the right pinion to get.

You could check out the TP 5000mAh eXtreme V2 cells here:
http://www.thunderpowerrc.com/html/extreme-V2.html

Or the Neu 25C packs:
http://www.neumotors.com/20061222/25C_Batteries.html

Both of these would be under $300.
Depending on the runtime you need you may not want to go with the biggest packs around - bigger packs mean more weight, which means more weight to move around and more Amp draw and hotter components. Hopefully some of the guys here who have some more experience racing can recomend a good pack.