the sound is different because of the size of the diaphragms.
LD's are slower (physics is a bitch), so they don't have that bite or edge of the SD's. This isn't bad, I love(d) my u89s.. being slower they are less detailed but more "musical".. warmer and more gentle sounding. They throw a monstrous soundstage too which is nice
I've never run the ADK's but I have many, many tapes made with them.. they're very nice mics, especially for that price point!
Just be aware that LD's have a totally different sound to them than the SD's...