I used a focal kevlar unit for mine 5K013 ( or something along those lines, not made anymore). I am still impressed by them. I spent the most money on the midrage cause that is important to me and arguably where the most acoustic "information" is. Although I haven't used it, I suspect the SEAS Excel series with the magnesium cones are good choices too. I have heard them in the Jamo Concert 11 (I think). Only thing with those may be crossover, I think they have a little resonance at higher frequencies. Good Luck
