Just 1 more try to help, nike 85 will improve your game by miles.
They are very nice if you want to get to TM and stay there. The rsi irons, are only a little bit faster, but they will stick with the 3 iron where the 85 nike 3 iron will eather not clear that up hill , or it will run 10 yards past.
from 87 to 90 is not long.
I have tried all the irons that you are considering, the rsi are by far the best.
Siggi