It seems I feel differently about this every time I hear it. But to my ears it is definitely beautifully produced, mixed and mastered - it's got that really 'vivid', three dimensional and 'present' sound whilst also being really pared back and subtle, similar in that way to Nest and other great R. Rich albums. Lovely mastering too. I do think he has such a unique sound, although because similar elements are used from album to album no matter what their theme (which I understand he considers his 'voices' or something to that effect, like the steel guitar, flutes and other recurring sounds) I have to separate my listens with his material in order to preserve a sense that each work is addressing something different. For some reason it doesn't matter so much with other ambient artists - I can just let the albums roll on, album to album. But there is something quite 'thematic' to each of his works, so if I'm hearing similar sounds in Nest as I am in What We Left Behind - even though the two seem to be in very different zones thematically - my brain finds it a bit problematic. Odd huh?