First, what are you hunting? What type of cover are you hunting? The vest with floatation devices are strictly for waterfowl hunting. The other two can be used for upland and/or waterfowl.

I highly recommend the use of vest! Not only do they keep the dogs warm in the colder months, they are an asset for protecting the dogs from injury. Currently I am using the neoprene version (no chest-protector) and love them. These can be easily repaired (sewn), which is a big plus. The other styles I have used in the past lasted -- at best, one season. I have used the same neo' s for three seasons now. Another added feature is the multiple-patterns that vest come in. When upland hunting, one of my dogs always has a hunter-orange vest on -- especially during deer season.