I like the one listed above... I get them in BLACK for a theater since you should be painting your ceiling dark and should have installed dark/black power outlets, covers, etc.
There are many installations where I have run the wiring down inside the pipe the entire way. Just cut a 1.5" hole in the ceiling, and feed the wires through that. It works well and gives you the cleanest path possible.
There are pipes which have a opening in them as well which are available...
This one is a Chief version, but others make them.
There are also offset plates so you can open up the ceiling above the plate and drop the wires down more easily...
Once again, I'm on Chief's website, but you can look at Peerless or others.
Do not get the Chief RPA series, those interfaces are mediocre. Better than others, but still difficult to fine tune. On a budget, consider the mount from HTDepot.com