i was wondering what some of the characteristics of different sizes of tai chi postures.

from what i've seen, the smaller the postures, the more difficult and intricate the movements are, as well as using chi more conservatively (i.e. the hand not bent to make the strike until right before contact).

also, in the latest issue of tai chi magazine, in the article about using different circle sizes in push hands, the guy wrote that large circles a rather impractical. if i am not mistaken, though, the popular yang and chen long forms are done with large postures, with other sizes being quite rare.

what are your impressions or thoughts on tai chi chuan posture sizes?