I recently made the switch to 4-3" parobilc.
I really get great flight with bh and field points a like. The sound level has droped down to.
I was shooting yesterday and a big cross wind was blowing so I was able to see how the 3-5" 3-4" 4-3" all shot in the cross wind. It was gusty so not a great test but it was a good amount of wind! The 3-5" had bad flight starting at about 17 yards the 3-4" was about the same but @ 20yards as the 5" was at 17 yards. The 4-3" Shot like darts up to 25-27 yards (my max distance at the house). I shot both BH 2,4 and 3 blades and field tips to see if that made much difference with the wind it didnt seem to affect anything as much as the feather did. (my shooting is not up to some of your standards, I shoot 6" groups at my max range of 25yards so take from this what you want)
I think if you messed around with it you will find something that your happy with and you can always improve on things which is part of the fun! If we didn’t love messing around with this stuff we would just shoot those strange looking contraptions with the wheels, strange cables, and bright neon lights hanging from them. Haha J/K
And like said before my main reason for shooting is hunting and I really like the lack of need to look down when nocking the arrow!