Sigmund says it sounds like you want more than need new speakers. This is OK.
This hobby is much more want than need. The Paradigm 20's are a superb speaker and my recollection is that they are not harsh but very musical and smooth. I have a slightly different recommendation for the bass however. I think you should consider a 15 inch sub. It has the kind of deep musical feeling that the old 12 inch air suspension jobs used to have.(JB/AR/Advent). have fun. dk