Russ, I can't comment on the Burner 2.0's as I'm not quite there yet. I do have the G10's and the i15's.
Someone with experience of both i15's and Burner 2.0's may be able to tell us if the meter speeds are the same - as in the specs. If they are the same, I have NOT been able to gain anything extra from the more precise i15's because I just can't handle the meter speed - not even with Cally's. In a way, I was missing with more precision lol.
After days of trying the i15's went back in the shed. G10's got dusted off and I'm back to shooting competitive scores.