It is too funny that the original member who posted this is named Roxanne, and she is asking about thimbles! Roxanne thimbles are great, and I use mine when I remember to take it with me.
My absolute favorites, though, are the little leather circles that I put on the tip of my finger. And, when I am changing directions while quilting on a frame, I use a thimble on my thumb, like Alex Anderson does. That one is just a regular metal (not silver) thimble, because they are hard to find big enough for your thumb.