Both are great choices. My personal observation from my animals past and present.
Retic / BCC
12-20 feet/ 6-9 feet
very active/ Can be active but more laid back
Eats large and almost any correctly sized mammal (Rabbits and small pigs when grown but males smaller) / Eats jumbo rats at most.
Both are beautiful.
Both bring unique personalities.
I am partial to retics though.
Keep in mind this is my personal experience.