here's an update on the cheapos (cheap ebay lipos) One of them puffed while charging on my cellpro 10s charger.

Maybe I shouldn't have charged them at 3c but hey, the 10s is supposed to be able to do that safely so I tried it. It's not puffed by much but it is puffed. I haven't opened the shrink wrap but it looks like there's more than one cell that have puffed. The other one will go to power a hand held vac. Live and learn. So now I'll start shopping for 4s lipos to replace them, I won't go cheap this time
It's a bit hard to see from this pic. The left one if puffed.