RE: Sportdog 1200
I have the Sportdog 1800 and use it on my Brit without any problems. I snug the collar up so that I'm sure the prongs are touching and she doesn't have any problems with it on her neck. I haven't had her get it caught on branches, grass or fencelines. It may seem large, but it is just as big as the TT that I have. The only smaller option is the new Innoteks that are coming out. I have noticed though that I have to turn it so the on/off button is facing forward. Otherwise, she can sometimes turn it off when it presses against her dog collar. I hope some of this helps.