Nice, sleek interface. If it weren't for Netscape, it would be worth the cost. From the installation, you know that Air Mosaic is something special.
Installation is completely straightforward and sleek, and the user maintains a lot of control.
The best aspect of this software is its interface, which is sleeker, cleaner, and more intuitive than the NCSA interface. The buttons on the toolbar are large with explanatory text, and there are just a few of them. The URL window is very nice. Not only can you open URLs simply by typing them in this window, you can access your window history from it as well. Not an especially tricky programming task, but definitely useful from an end-user standpoint.