Yes... but it's important to point out that you get only 1 keyboard in your purchase of a Closed keyboard, and in the open one you get technically unlimited keyboards that come packed full of sounds just the same as a closed keyboard comes.

Go here for example and hit play to hear the demo of Tarkus. http://home.btconnect.com/christopherg/
It's worth listening to the entire tune as it changes in around 162.

Now look at the price...!!! 50 UK Pounds is only 82 USD. That's VSTi sound freaking awsome...!!!!I'm actually going to buy it for my V-Machine today. No wonder too, its from the same guys who made Superwave P8 which is a free VSTi that just blows my mind.

Or go here for a pack of 10 free VSTi's http://elektrostudio.ovh.org/
Click on the Audio Demo and listen to the first tune. It's like Jarre in a box for free.

This has just got to be the future of keyboards. The integration of hardware and software.