I have heard Dali speakers many times. IMHO they have only sounded good with tube gear. In fact the best sound I have ever heard was a pair of Ms-4's going through a Wavelength amp and pre-amp. I am currently a Dynaudio user but I would have no problem owning a pair of Dali's.
Out of all the speakers you mentioned I have only heard the 5.4's. I think they are a really great speaker but I would still stick with what you have and work around it. Try to borrow a tube amp and some different cables. That would be my first choice before buying other speakers.
Out of all the speakers you mentioned I have only heard the 5.4's. I think they are a really great speaker but I would still stick with what you have and work around it. Try to borrow a tube amp and some different cables. That would be my first choice before buying other speakers.