So long as mice are of such interest, my specific concern is in saving my wrist. Any experiences with a thumb ball versus a standard ball-on-top mount? -- ########################### Erik Ness <erikness at tds.net> 608-242-7604 Urban Outfitters: http://nrdc.org/onearth/04win/reviews.asp Dirty Minds: http://www.gristmagazine.com/books/books121503.asp