Pano2VR allows for a lot of flexibility and customization. If they don't have exactly what you're trying to accomplish pre-created, you'll likely be able to add it yourself. Review collected by and hosted on G2.com.

It can be a bit of a learning curve as there are so many features and options, but they do provide plenty of documentation and instructional videos to make up for that. Review collected by and hosted on G2.com.