Dogtra 2300 NCP Advance
[2300NCP]

This is a sturdy reliable collar. I have used a few others, and this collar is leaps and bounds above all else. I am astonished by the range, and currently having a very sensitive dog, the ability for very low level stimulation. I am impressed. You will be impressed.
Also, allk-9.com is a great website...Keep up the good work!