Great to hear you have your surround active Loren. Being immersed in sound is treasure to me.
The 30ish Namlook albums I have are kind of a blur to me to recommend faves to you because I choose them somewhat randomly from their section. Last January I tried playing them in chrono-order daily with breakfast (my prime surround-sound time) while reading and the experience just left me hungry for the works. There's some sameness but they're in areas I enjoy and treat as ambient/chill while I'm reading so a 25 minute slowly evolving groove is a plus, not a minus.
The only one I know I did not enjoy was "Virtual Vices VI". The "Urban Meditation" series isn't for everyone (industrial ambient?) but you might want to try one. I recall enjoying the last (26 minute) track on "Music for Urban Meditation III (Namlook XXII) quite a bit though it's completely different from the rest of the album.
This morning I was enjoying Pearl (Namlook XXIII) so I'd recommend it. I have "Labyrinth 2 and 5" with Montana and am fond of them. The (long) series with Move D is very enjoyable if you you're cool with chilled techno grooves and voice clips. I often pull out Move D / Namlook XVII or XVIII as Lynn and I dig the feel. "Outland V" (PW 51) Pete Namlook & Bill Laswell has a much darker tone, in case that's of interest to you.
These days, unless you're up for some internet scouring, these DTS discs are getting harder to find, so you may just have to investigate what's available at a reasonable price. (Checking various Amazons (.com .ca .uk .de and 3rd party vendors) plus Discogs can turn up several options). Look for a Red DTS box in the lower left of the front cover to find the surround albums.