This is my newest guitar.  It's a Collings D1 and it is load and smooth.  The difference between a D1 and the D1A is the A has an Adirondak spruce top where as the D1 has a Sitka spruce top.  The Adirondack traditionally has produced a louder sound than sitka but I played this one alongside another D1A and couldn't tell the difference.  Oh, the D1A is $800 more.  Thanks to Pete and Butch for helping me decide on this great guitar.  The first festival I took it to was Supergrass last weekend and everyone complimented me on the terrific tone and volume of this guitar.  It sure looked funny with me picking my Collings wearing a Martin ballcap.