anybody compare Dynaudio Special 40's/Heritage Specials/Confidence 20's?

The 20s will need lots of power especially current like the HSs - I had the HSs and they only woke up powered by my Gryphon Diablo 300.

Dynaudio should up their recommended amp power ratings as every Dynaudio I've owned loved power, the more the better.

Just my 2 cents, your mileage may vary.

Check out “Studio incar” on YouTube.  He’s done many great Dynaudio speaker comparisons.  Top notch. 

All of the Dyn’s require a quality high current amp to open them up.

As far as the question, it seems like you prefer a ‘V’-curve sound. The 40’s have a (flavor) of a V-curve. All of the higher end, eg Contour and up, do not have the same crossover points and flavor that the 40 has. The heritage is almost monitor-like, which is very neutral. The same will go for the Confidence series. If you preferred the 40’s over the HS, then you will like the Confidence as it has a lot more oomph than the 40’s.

My 2c

HILDE45?

I own a pair of Fritz carbon 7se speakers for about 2 years now. Strictly rock and roll. Using a ATI 6002 AMP, stream qobuz and CD's  They are so fast and accurate, and smooth to listen to. Very Happy, haven't heard the special 40's though. Good luck!

I am not sure that speakers with large crossovers can deliver the speed and energy you desire. Crossovers are subtractive...they don't add to the music.