As bulldawg said, I love the consistant power of the lipo. It makes me more consistant and being more consistant is faster in the end.
I love just filling my battery's like a fuel tank i just top them off. No discharge equalize and charge and repeak BS
I use 2 battery's to run 2 classes for the last 8 months with 2 chargers. I used to use 10 packs and buy a couple new ones every 3 months. I was a slave to those batterys. If i couldn't use my lipo's i would quit this hobby lol.
I like the orion 3600/3800 25c lipo's they are awesome. I run practice laps to burn off some juice to get to that sweet spot. great battery for stock and 19t.