Seriously, you need to provide some info, not just ask a simple question. What mids are they mating up with, what "sound" do you like, are you just looking to get loud/make noise?
I know those 4ways have the tweeter and super tweeter but they still cant stay with the bass. I think as much highs I can get from those pioneers, I turned the bass all the way down on them and added bass blockers.
Its a little more money than $50 but if you want the best tweeters for the money look at some Earthquake Screamers...They will keep up with anything //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif