I have never heard a bad sound from any Dyn product. But I'm sure you know the new Contour C20-C30 and C60 are just hitting the states. Might want to wait until you can hear them before making a decision. They have been totally redesigned from the ground up. The reviews so far are very good but I have not heard them. I've heard the 3.4LE's and they are very nice but a little laid back compared to some of the other Dyn models. I owned the C1's and Sig's for about 5 years and they too are considered a little laid back but my favorites. I have a gut feeling the new C series may be more aggressive but it's something you should hear for yourself before making a decision.
Good Luck
Good Luck