I really liked the second one (it seems to best highlight the shallowness of the depth of field), but all are great. How long did you have to wait with your setup to catch the sequence and how long did the emergence take once it began?
From the start of the split till it was fully out, maybe 70-80 seconds. Then another 30 -40 secs or so of wing drying/unfurling and repositioning to classic stonefly wing position. Pretty fast:)