We use both pink and orange balls in our sunday leagues and midweek games and i can honestly that they are rock hard! Gun out of the middle of the bat but dont get much else from them if anywhere else on the bat!
But back to the topic of light enhancing sunnies, i have tried them and they do brighten everything up very well however i just personally cant wear sunglasses in the field. Don't know why just dont like the feel of them. If you can wear sunnies in the field or do wear normal sunnies when fielding then i would reccommend getting some light enhancing lenses as from when i have worn them normally they have made everything much brighter.