Urgent: In-ceiling speaker required

Hi All,

A new interior design job at work requires in-ceiling speakers specifically
around 4 inch in total diameter.

Please let me know what brands should I be looking at.

I found out apart c3 are available for 4500 each. I require 2 pieces only.

Are apart products reliable? Will they work with jbl libra 250w amp?

And according to you what price should I be paying for jbl libra 250 amp?

Please reply asap
Thanks
Aby