After looking at several options for photographers with existing IPIX setups or someone looking to buy into a product I'd recommend you look at
Panoweaver for stitching virtual tours. This will allow you to stitch images 360x180 images there's also an area to check for compatiable equipment which I'd highly recommend before purchasing.
Tourweaver for creating an interactive map with compass effect. You can also create a personalized viewer skin and customized walkthrough.
I'll post up my samples the next chance I get.