I recently got from Washburn the Washburn J-7. As crazy as it sounds, it is already my preference to the Gibson 400. For anyone with a passion for the 400,...do yourselves a favour and check the Washburn first.
Trevor compared it with the Gibsons in his collection, such as his Barney Kessel model which he used on Jacaranda, providing a great jazz mood on several tracks (or "that" kind of thing, as he puts it).
The J7 is a single cutaway jazz guitar in a similar style as the Gibsons and you can learn more about it here:
http://www.washburn.com/products/electric/J7VNK.html