Just to clarify Vincent Ng did not make my packs. Mine were made by a Mr. Khor from Perak, Malaysia. Vincent is based in Singapore.Those do look good. I'd love to get one of the 11870 ones from Vincent, just need better shipping rates. I tried the strapped on lipos and the bird just handled so poorly. I like the idea of plug and play and the weight being center mass where it needs to be.
Khor quoted US$140 for a 11740mAh pack.