They both work great. I like to pour a bit into a bucket, and then fill the bucket 1/2 way with warm water and throw a sponge in there and douse it on Nelson after a good ride.
I love sore no more for injuries that need cooler linaments, freeze it (vapco) spray for legs/tendons after a hard work out, vetrolin for hot summer days as a body brace after a good workout or show, and LOVE steam it (vapco) to heat up and relax muscles both before and after a ride, esp after a chiro adj or massage, and in the cooler weather. I find it helps loosen up the horse before I get on and does wonders for the muscles.