Like I said, the truerc packs are just a good bang for the buck, but far from being the best that you can get. I will, however, say this; I believe the truerc packs to be underrated. I run 5S2P 8000mAh packs and they don't even break a sweat.

Due to the relatively low C rating, I'd stick with the packs based on the 4000mAh cells and I'd go for a 2P configuration. So, if you are looking for a 4S pack, I'd go for the 4S2P 8Ah pack. At around $150, they are hard to beat.