I have 2 set of li ion battery but at the end prefer lipos.
Ease of build, management and cost are main factors.
- Knowing every single cell is balanced
- Being pretty much plug and play enabling me to bring extra packs along for the ride and easily swap out aging packs
- Cost, if you are patient good deals pop up on a semi regular basis. Tattu 14000mAh 25C 6S LiPo SALE PRICE($99+shipping) for example.