Of the mini monitors the C1 is without a doubt the best. The S1.4 and Special 25 have the classic small speaker big box sound and have a resonance hump in the bass response (underdamped design) - this will probably sound more impressive but it simply isn't as refined and will tend towards "one-note bass" (although since they are all great speakers perhaps one-note bass is a bit unkind - lets say it is deliberately made to sound "big" and therefore excellent value to many users)
And the "Best" Dynaudio monitor is...?
They've built quite a few monitors over the years. The C1 seems to be getting a lot of press recently but is it the "best" monitor they've built? For the money they should be but.....are they?