I'd have to ask,...what are they for? Background music? Home Theater? Party music? Other?
If just background, just about any in-ceiling from a reputable manufacturer would do.
Home Theater,... I'd recommend in-wall over in-ceiling. I have three suggestions; Triad, RBH Sound, or James Loudspeaker.
Party music,... bite the bullet and forget about aesthetics. Look into floor standing or bookshelf models from the likes of JBL pro, Cerwin Vega, Klipsch etc, etc.
