Libre Pilot firmware is a lot better than the last OP release. The next one will be even better.(hopefully late summer/early fall, from what I've heard)
I agree, any of the 250 templates will fly fine for a 210. I've tried the qav250, blackout 250, HK260, emax250(280), mxp230, even the toad250. They All fly a 210-250 X or H good enough for a starting point.