I'm new to the training collar thing myself, but stay away from sport dog. I bought one for my lab, and the range is horrible, the battery life is terrible, and my lab shrugs off the nic like its nothing. He is a stubborn dog, but after I bought a tritronics, he minds a lot better. Ill have to check the model number when I get home, but its a solid collar and remote. If I remember correctly they were bought out by Garmin as well, so you could get an older model on sale somewhere I'm sure.
Sent from my space modulator.