My personal preference is the Vaja case (
www.vajacases.com). It is made of the finest Argentine leather and fits tightly at first, but after a while, like a glove. It is somewhat pricy at about $100 (including shipping). It's custom made and takes about 20 days from order to delivery - but it's worth it! Many different color and leather types available. I've had two - one for my original Ipaq 3650 and now for my new 4705. Good luck!