Hi Sub16,I am Lady. I see that it has been a while since you posted this, but i wanted to respond. I do love to be collared, it really puts me a deep in the submissive mind set. There are a lot of different collars out there, i started with a thin collar with three rings on it ( on the left right and front). This provided multiple options for leashes and using strap to link my wrist to it.
I enjoy being immobilized, so Sir bout me a posture collar ( one of my favorites ). This collar is very wide and covers my entire neck, and is there is a small cut out that goes under my chin. The cut out a a key feature to its somewhat comfort, allowing it to fit snugly around my neck. When putting it on i found that i have to extend my neck a little. This collar is very restrictive, you cannot move you head left, right or up or down. It took time before i was able to wear the collar for longer periods. I had to slowly increase the time i wore it, wearing it too long at first can cause some strain on your neck. After taking it off, my Sir will rub my neck to relax my muscles a bit. This can be incorporated into play, and can be quite arousing.