Ceiling Speakers


I know the very topic precludes anything any of us would consider hi-end sound.  But my neighbor is putting a great room onto his house and is asking me for recommendations as to in-ceiling (i.e., flush mounted) speakers.  So far I have succeeded in pulling him away from Bose, but am having trouble pushing him toward something good.  The feedback on these looks favorable, and I appreciate the design principles:  https://rslspeakers.com/c34e-ceiling-speaker/  

If you have heard anything reasonably priced (let's say $300 or less per speaker) that sounds good, please respond.

Thanks!
cedargrover
I have 5 of the Thiel PowerPlane 1.2's that I've accumulated one at a time over the last year. I've bought them whenever I've seen on or two for a great price. Otherwise they are cost prohibitive for my use. I think they retailed for about $1000 each. I've probably averaged about $250-$275 each, buying over time. I believe they are no longer in production.

I haven't really heard them yet, but they got great reviews. I can tell you that the build quality is top notch.
I have Atlantic Technology ceiling speakers in my office. I have had them up there for about 5 years and they sound fantastic. They are so pretty, I leave the grills off. The tweeter pivots and they are available with back boxes.

http://www.atlantictechnology.com/products/wall-ceiling-speakers/

If it is $ 30 or less, you should consult some ceiling speakers here: https://khangphudataudio.com/loa-am-tran. And maybe it is a wise choice for you.