I heard a demo of the Emulator II when it first came out. It was incredible. But that is now utterly ancient technology, but the demo would STILL be jaw-dropingly good. Great playing, and great sounds sound good no matter when they are made, and what they are played on.

But you merely have to go to the websites of the current über-orchestral libraries to realize JUST how far things have progressed, and at a fraction of the price. Just how much is that Lowery? $30k+? What about a TOTL Wersi? Similar? A TOTL computer system, controller keyboards and a TOTL orchestral library is easily half that, and 100 times better sonically. Not to mention something as cheap as Garritan Personal Orchestra, which with good programming and playing, could, IMO, easily sound as good as that Lowery clip. A $299 piece of software.

Now whether you can PLAY something that well (and make up the patches and programming) is up to you. But you certainly don't need to buy a keyboard roughly the cost and weight of a nice car to do it, anymore. Unless you DO want to play Blackpool, that is...
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An arranger is just a tool. What matters is what you build with it..!