>>ISTR using a 4000 a couple of times, my impression is the Elite is somewhat more "split". Do you find you use the extra keys/functions the 4000 has vs. a standard keyboard like the Elite?
>
>With the Elite I HATE the arrow buttons layout. The arrow buttons should be an inverted T layout not a + layout (IMO)

Well, I feel the exact opposite. The inverted T has always driven me crazy, I'm constantly hitting down when I want to switch from left to right. Inverted T always struck me as a compromise to be able to fit the keys in 2 vertical rows rather than 3, on "compact" keyboards. It's become a "standard", just like QWERTY - that doesn't mean it's the best layout. It just doesn't seem logical to me, I can't see how it would be "ergonomic".

>
>I actually only use 3 of the extra dozen or so buttons on the 4000! Volume +/- and the Calculator button. The shortcut to the Calculator is especially fantastic.
>
>My favorite natural keyboard was actually this one (but I can't find it to buy it anymore):
>http://cdn.hometheaterforum.com/6/68/683857ab_htf_imgcache_43123.jpeg
>
>Notice the double height delete button.

That's the Microsoft Natural Multimedia Keyboard:
http://www.microsoft.com/canada/hardware/oempartners/ProductDetails.aspx?pid=006

>With the one I use now:
>http://www.microsoft.com/hardware/mouseandkeyboard/images/products/nek4k/mk_productfeatures_nek4k.jpg
>
>The delete key is only single height and directly above the Delete key is the Insert key which I accidentally turn on a few times a day... very annoying.