7XL , run 5s2p or 4s3p pack?

[zeropointbug]

Hi, i am still deciding over the two options. I can run either 5series A123 M1 cells with 4.6Ah capacity, OR a 4series pack with 6.9Ah capacity?

I know 4s will still have lots of power, what do you guys think?

BTW, these Quarks are kickass. Running very low speed, trying to stop the rotor impossible, there is like an insane amount of torque at like 200rpm, LOL, there is absolutely NO cogging.