An 'unabridged' book has all its content as the author intended, nothing's removed. I prefer the unabridged biography because it includes all the original details.
Pro Tip 2/3
Lengthy Reading
Unabridged texts are longer; they're the full works and require more time to read. Set aside ample time for the unabridged novel, as it's quite extensive.
Pro Tip 3/3
Original Flavor
Reading 'unabridged' works lets you experience the original style and language. The unabridged Shakespeare plays retain their original Elizabethan English.