Go to Librepilot. Librepilot took over open pilot and has the more up to date firmware. Ive flown with qav250, Emax night hawk and ZMR 250 base settings. One of those is way better then the rest ( cant remember which one because I fiddle around so often) I also noticed that the base settings are different in libre pilot compared to open pilot. also google Eachine racer pid settings and you can find pid setups people are using that you can try. One more thing as I've been learning acro/rate, I found that you can switch back and forth mid flight from 1-2-3 so if you get in trouble you can flip the switch to help stabilize the quad. I found that out after a lot of crashing in acro/rate. ha ha!