Which Batteries?

I'm currently bidding on some Dewalt packs(for 6S3P) on Ebay ATM but if I don't get them, which 5000mAh+ pack would you guys recommend i have room for 2S+3S or 3S+3S with 5000mAh+ cells (or 3 lower mAh 5S/6S packs in parallel).
P.S. I would like to keep the battery price(s) under $400USD

And regarding the motor I just wanted something fun and overkill...the LST I'll be using it in is far from stock, as far as drivetrain everthing but the tranny and axles has been upgraded (ie - diffs=tini+nova cups+gpm cases spur/pinion=tini) and the rest of the truck has been upgraded also using titanium and aluminum where needed, I'll post pics when it's closer to being done.

[myndseye]

Originally Posted by Bad Karma

And regarding the motor I just wanted something fun and overkill...the LST I'll be using it in is far from stock, as far as drivetrain everthing but the tranny and axles has been upgraded (ie - diffs=tini+nova cups+gpm cases spur/pinion=tini) and the rest of the truck has been upgraded also using titanium and aluminum where needed, I'll post pics when it's closer to being done.

Don't forget to brace the rear of that motor. The Neu's larger than the 1515 series did not have RC car use in mind, seeing as that they never thought anyone would be silly enough to put something like that in one, and therefore they don't have a two piece can. The three piece can will come apart if you handle it jarringly, and probably take your electrical setup out with it when it goes.