This may answer your question...
I bought a orion 5000 2s 20c and a 3800 30c and a smc 5000 28c and a venom 5000 20c..
I sent the orion 5000 2s 20c back for the smc.. the smc lasts quite a while on my mamba max 5700 system on my xxxt.
I'd rate the 3 i have best - worst
2- orion 3800
I'd get the smc battery..
Loads of stuff for sale- lipos, xxxt's, mamba max system (new), tons of spares charger new