Julie's advice is spot on.  ISE is still very much a commercial show, with a minimal amount of Resi sprinkled about.  There are far more people at ISE (80,000+) than CEDIA, and the layout of the convention center is a bit of a disaster.  I was able to see everything I needed to in about 2 days.

That said, it is nice to be there without some of the rep pressure at CEDIA.  I've found that my domestic vendors tend to take me a bit more seriously over there, as it shows a bit higher level of commitment on my part to show up there.
Amsterdam is a good time, and can be relatively inexpensive if you are careful about how you plan it.  I stayed in an apartment within view of the Central station for about $150/nt, and I found places further out for a bit less.

As some of you know, I tacked on a few days skiing in the Alps after the show and that made the trip an even better value because their resorts are so much less expensive than the ones here.