I really like the Sombra sample that Sombraman sent me. I LOVE the way it smells. It's like grapefruit and eucalyptus...mmmm. I have used it on myself several times for a cranky shoulder before going to bed at night. The effects stayed for a long time and helped my shoulder a lot. My wife likes it as well. When she gets a massage, I'll often use some on her neck at the end.
I've had Biofreeze used on me before; I think the application wasn't the best. She used it on my shoulder without letting me know what it was, and then proceeded to get it all over the rest of my body....very distracting! Unfortunately, that experience has caused me to shy away from the product. One day I will have to get over it and give it a try, but for now, Sombra is working for me.