the aromatherapy ones sometimes smell too much and they give me a head ache. i have one that goes around my neck and while the heat is nice, the smell isn't. i didn't pick it out tho, if i did i'd probably get a different scent.
also, if you are cheap like me and don't want to spend the $50 for hte ones at the mall you can always uses tube socks and rice. we use them at the vets office for patients waking up from surgery. just pop them in the microwave for a few minutes and presto, a portable heating pad for any place on your body. works great for necks, stomachs, and backs.
