I don't do BIF, so forgive my ignorance, but why do you say the mk ii is so much better than the G9 for this use case? I tested the EM5-iii vs the G9, and did not see a significant improvement for tracking in the EM5-iii over the G9 on v2.4 FW. This was tracking dogs running around, though, which is a different use case. Have you used both? I have tried to find head to head comparisons, but all the comparison videos I found were from like 2 years ago, and so represented the first G9 FW.To be honest, don't get a G9 if you want solid BIF performance. It's just so far behind the competition, even with the new firmware. Put similar money into an E-M1 II, it really is so much better for BIF.