As an owner of an Advantage 2, I wholeheartedly agree. I was worried that I'd lose my ability to type on a normal keyboard after I became accustomed to the ortholinear layout of the Kinesis (as some posts online suggested), but I'm typing this message on my MacBook Pro's keyboard.

That said, there's nothing more comfortable and pleasant to type on for the whole day than my Kinesis keyboard. Well worth the $350 price tag and the learning curve.