Well I am being taught by my Mothers BF. He has been training for about 25 yrs. I don't know any of the names of the schools he has gone to but he has attended a few and done other forms.
What I really appreciate about the form is the internal aspect of it. Coming up through the legs, directing with the waist and expressing with the hands. My knowledge is very basic right now, I never realized how complex this from is, once you learn the 108 moves that is just the beginning. It is just like learning the alphabet the (108 moves) after that come sentences, paragraphs and poetry! I really never realized how deep Tai Chi is. You can send someone flying by only using your stomach. Through breathing exercises and knowing how to harness and redirect force.
I also like and dislike how everything is slow. The reason is so you can perfect your form and technique, so when you have to react fast your muscle memory and movements are fine tuned for combat that you act without thinking it just happens. so to speak. This of course takes a lot of practice though. I dislike the slowness because sometimes I want to jump around and go crazy!
When also do a little qi-gong at the end of our session. Gathering in energy from The Moon and moving it through your body. For cleansing the bones, skin and organs.
I still have much to learn.