The synergy between your amp and speakers can make it or break it for you. I have had Klipsch Fortes and currently own Quartets. More than any speakers that I have ever owned, they've tell me VERY quickly if an amp is a good match or not. If an amp is grainy or harsh on top, you will know it. The same goes for a boomy or lacking bottom end. But with the right gear upstream, a good horn speaker has a clarity with vocals and dynamics that I really like. They are lively and fun to listen too, even at low volumes. This makes them great for TV and movies as well.
I have to agree with others on the Ti tweeter diaphragms helping to smooth the top end a bit. It's money well spent. I did not notice as much of an effect with the crossovers and if I was doing it over, I'd likely just replace the caps and save some money that I could have put into a better amp.
I'd give them a listen and see what your own ears think.
Mark