In the interest of full honesty, I will say that I am a co-founder of a business that does 3D scanning for RE. I also do research in the applications of xR.
If you are trying to impress investors and the deal is worth a significant amount of money, I would suggest springing for a Matterport scan. You can search for providers in your area. What I like about the MP scan is it retains some sense of depth and it auto-generates dollhouses and floorplans so the viewer can get a view the layout of the property. I can't say how much the scan will cost as it is up to the service provider, but it shouldn't be that much more than professional photos.
In my experience, 360 videos and panoramic shots do not retain the sense of depth that an expensive 3D 360 shot would. You also have to stitch the shots together or create a walkthrough. I think it's harder to do well.
One last suggestion, for the final touch you could order a few custom branded Google Cardboard goggles to send with the investor package - your prospective investors can immerse themselves in the Matterport scan and have a memento that is way better than a calling card.