That keyboard layout looks good: maybe a nice compromise between the traditional linear layout and the original ergonomic keyboard, which I never liked because the two halves were too widely separated for my preference. How's the key action on the 4000?

>I got a Microsoft Natural Ergonomic Keyboard 4000 early this year at the office. I love it so much, I got one for home. Best keyboard I've had in years... and it puts the cursor keys in the right place...the way God intended them to be.
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>>Does anybody have a keyboard they really like? I'm not talking about bells and whistles like multimedia buttons or wireless connectivity and such -- a conventional 101-key layout would be just fine -- but what I'm looking for is one with a good tactile response and key action that isn't mushy, wiggly, noisy, or otherwise weird and annoying during heavy use. In other words, something you can touch-type on all day and not feel like it's slowing you down or wearing you out. Any recommendations?