Educator 400TS vs 800TS vs other?
Looking to pick up a new and high quality e collar for our 4 YO thick headed GSD. The 400TS has all the range I need at 3/4 mile, but it looks to be the same receiver as the 300TS. The weight ranges for the 300TS and 400TS both start at 5 lbs, so I'm l little concerned that they won't be enough for our 100 lbs GSD. Any thoughts on any of these models, or perhaps a different brand altogether?