Finally sold my Jazz Fever by Daniel Slaman and bought a Peerless Maestro. It is a small body guitar which is great for me, and it plays with the lowest action I have ever achieved. It's quite heavy so doesn't have a big acoustic punch, but I think this one will see me out. Just got to find an acoustic the same dimensions.
http://www.peerlessguitars.eu/#/martin-taylor/4556188503 Been in touch with a luthier called Martin Keith. Now here is a remarkable guitar, the Auriole. Detachable neck, and truss rod adjustment at the base of the neck. Just needs a cutaway and adjustable bridge (all doable apparently) to make the perfect acoustic guitar. Lot to fork out though for a guitar you can't test drive.
http://www.martinkeithguitars.com/listing/models.php?type=EG&model_id=9