Octave Mandolins

I am so excited! I have decided to get an Octave Mandolin , they sound beautiful. Any advise?

Look, listen and learn! Beautiful ! :medal

https://youtu.be/heTA2FGlu8s

Hey Ferg, Brian, Steve and Dustin and the whole crew new and old, you are one of a kind, outstanding in tune with your fans and your guest Artist that’s why we always remain. Much much love to all of you for the New Year! :clap :sunshine :kiss

What is the difference between a crossover Mandolin and an Octave Mandolin? :rolleyes Can someone enlighten me :flower still searching for a new Mandolin and I am just floored at how many different Mandos are out there. Can they really be that different?