I had the same question - Boxwave vs Treocentral Skin. I opted for the Treocentral. I'm very happy with the quality. My cutouts look pretty good. Any slight inperfections don't really seem noticeable when the Treo is in the skin. The only alteration I made was to enlarge the cutout around the stylus. I like to use the stylus & I couldn't catch my fingernail on the stylus without doing a little surgery. I found it easier to use scissors than to try to make a bevel cut with an exacto.
Anybody know what the deal is with the lanyard? I would be afraid to use it. I'm not sure the skin is strong enough to support the weight of the Treo. I think the nylon "string" used to loop around a portion of the skin would tear through when subjected to the weight of a swinging Treo. Dumb idea & a waste of money.