Ceiling speakers are rarely a good option for good audio. It's much better to go with floor standing speakers or bookshelf speakers at any time possible. Builders and their prewires are rarely about quality or understanding, and you are often stuck with what they give you.
You also have to consider that any rooms above in-ceiling (or in-wall) speakers will get half the noise being sent their way.
As for quality of audio, that takes a big hit as audio from speakers in the ceiling don't have the same quality overall. It also sounds very weird for audio to be directed downwards instead of into the room.
If in-ceiling is your only option, then I recommend the angled 8" speakers from Monoprice...https://www.monoprice.com/product?p_id=4929
These help to project audio towards the seating area and decreases the obvious nature that it is coming from the ceiling.
Speakers are an area in electronics where you tend to get more with what you pay for. They can outlast almost all other products that you will purchase and can retain their value over the years.
- Theater, whole house audio, and technology consultation during the build and installation process in the Washington, DC metropolitan area.