The standard dreadnought guitar body is deeper and larger than most other guitars that existed at the time of its creation, and thus results in a bolder and often louder tone.
OM "Orchestra Model"
Its rare combination of features - most important, the joining of a long-scale neck with a small body - makes it an extremely responsive and playable guitar.
12 Fret Slope Shoulder Dreadnought
This is the original dreadnought shape, first designed by Martin to deliver to the Ditson stores almost a century ago. I love the slope shoulder shape and short, wide neck with a slotted headstock so reminiscent of a bygone era.
This is a large, curvaceous instrument that has very feminine style. The tight waist makes it feel smaller and much more comfortable, especially when seated. It's large enough to have a very solid lower end, solid enough for prominent mids and sparkling highs.
This version of the very traditional Gibson L-00 shape is my personal choice for sitting on the couch and simply noodling for pleasure. It's just the right shape and size for comfort, and large enough in the lower bout to still have the full, rich tone so necessary for enjoyment.