New brushless setup for my E-Maxx, would this be good?
 

Since my Medusa 36-80 just snapped it's shaft, I am going to be getting a new motor and batteries. So I am wanting to go with a lower Kv, higher voltage setup. I plan on getting a Tekin 1550Kv truggy motor and 6S.

Here is my main question though

With the Tekin 1550Kv truggy motor and 6S, which of these 2 batteries would be my best bet? Would I even notice a difference? Can I go with the 4000mAh 30C 3S version without noticing any performance difference besides runtime, or will the motor want more than 160amps burst and would I be much better off going with the 5000mAh 30C 3S packs that can put out 200amps burst?

3S 4000mAh 30C/40C
http://www.hobbycity.com/hobbycity/s...idproduct=9510

3S 5000mAh 30C/40C
http://www.hobbycity.com/hobbycity/s...idproduct=9515

Or what about these packs, are they any good?
Flightmax 3S1P 5000mAh 30C
http://www.hobbycity.com/hobbycity/s...idproduct=8587

I don't have the same zippy lipos that I do turnigy lipos so I can't speak on the difference between the two you have listed above. The couple of turnigy packs I have tried so far have done thier job as have the zippys. I think the the turnigy are a good lipo and haven't read any negative comments about them to speak of. I would get the better of the turnigy packs (5000mah) it should handle your setup fine. Better to spend the extra 10.00 per pack now then spend another 100 later when you discover the runtime is about 5 minutes too short of your race/bash session/lunch break, etc......