I dont speak for anyone but myself, but I have to agree that a collar is a very special thing. lisa has worn 3, and we use her training collar still when we play hard, cause i wouldnt want to kink (pun intended) her wyred slave collar, even though it is more than strong enough to restrain her.
I dont think that I even had this mental process about the style, materials and such- i made the first 2, then for our 1 year anniversary I bought her the metal one. now when we get officially married, i will have 2 more wyred slave collars made, one with an o ring, and one with a diamond set on the front- instead of a ring.