The ease of use for both new users as well as experienced users. It's very flexible in terms of how you can put together your content. I like being able to take advantage of all the different aspects of this program without feeling overwhelmed or having too many options at my disposal. There are some things about it which could be improved upon but overall we're pretty happy with what they've done so far. We have been using VR360 for nearly 2 years now and haven't had any issues yet - everything has worked perfectly! They were quick to respond when we needed help during our initial implementation phase. Our biggest challenge was really just figuring out exactly what features we wanted and then making sure we got them implemented properly.