I've played with the Qilin dialer all day, I don't recommend using it right now. I'm not sure whether or not it has a data disconnect issue and it has a scroll bar on the side.
You also have to pair it with the right manila components which can be a pain. (i.e if you are using the qilin dialer, you have to use the qilin message enhancements and contactcard etc etc..)
edit: heh forgot to answer the question, I didnt even notice a difference at first, it just seems it a bit less rough around the edges in certain places. That being said, I think our current solution (i.e 3.40 rhodium dialer by calc with amarullz vga fix) is still the best for CDMA users.
Have you tried this were a newer build? There is still a scrollbar on the side and the previous phcanvga fix does not work.