If you like the new features of tw4, you could upgrade to it. Some of the new features are as below:
Customization of progress bar of Scene Viewer: swf bar is supported
Supports Popup Window in virtual tours.
Textarea supports showing hints of virtual tour components like hotspot, button and radar
Multiple actions can be added to one virtual tour component.
Distinguishing the visited and unvisited hotspot/radar is available in virtual tour's MapViewer and SceneViewer.
Size of virtual tour's MainWindow and SceneViewer can appear as specified percentage of the browser.
Two transition effects (Fly, Expand/Collapse) are added to Open Popup Window, Show/hide Popup Window action.
Hotspots in virtual tour scenes and maps can be zoomed in scale with FOV
Two groups of images with different sizes can be set to display in normal screen virtual tour and full screen virtual tour separately.
You could download the free trial version of tw4 to give it a try first. See sample virtual tour created with tw4.