And the "Best" Dynaudio monitor is...?

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)

C3's perhaps. Price point was too high for a monitor to sell well & C5 was probably the better overall speaker choice for most, but C3's were pretty special.

It's a toss up between the C1 and the S25, depending on your priorities.

Another vote for the C1

I love the C3's if you can find a pair. If you are willing to buy used and can find a pair of C3's for a grand less than the C1's, I think that's what I would do (assuming money matters). The C1's are fantastic, and if money doesn't matter so much, they're easier to find and you wouldn't go wrong. I think the C3's are just a very special speaker, though, and could easily live with them indefinitely.