Western Red Cedar is a softer wood that has great warmth. Because of the warmth of cedar, it pairs very well with the human voice and is great for singer/songwriters. Cedar naturally amplifies quieter playing styles and is a favorite of fingerpickers.
The auditorium body shape is probably the newest body shape for acoustic guitars. The auditorium takes elements that players love from various other shapes and combines them into a single body. The sound will be slightly different than a dreadnought and will scoop some of the mid range but it maintains the full dreadnought sound. It has a skinnier waist, much like a grand concert. This allows the guitar to rest lower on a player's thigh when sitting down and does not put as much strain on the shoulder. It's not hard to see why auditoriums have gained popularity so quickly.