Hard to say if they would sound better, worse or the same. Too many tweeters will fark with stereo imaging tho & probably overbright. Also, you probably know that each tweeter has to have at least a single order filter capacitor to keep lower frequencies out & different crossover points will change the sound dramatically too. It's a lot to juggle & there is no short definite answer to your query. The fun & also frustrating part is the mix & match approach where you try different tweeters, different filters, etc to get the balance you want. I think it would be good to start by asking what is it about the sound that you don't like or want to change & then we can get a better handle on where to start.....
Cpl
