I really dislike our central vac and it's apparently a good one..., power head, attachments, even has a animal print cozy for the hose.
I don't vacuum our hardwood...I use the Bona dry sweeper on it (big fuzzy thing), it picks up our dog hair and stuff way better than the vac. I do use the kickplate for the central vac to get rid of all the stuff I swept up, that's handy. But I wouldn't bother pulling out any vac for the hardwood/tile.
For the carpet...I use our Dyson over the central vac. It's just a better vac than the central could ever be. And it's a lot easier to drag around vs. the 30 ft of hose on our central.
I just have an ugly on for central vacs. We had one in our old house, hated. Have one in the new one...still hate it. With the Dyson...after doing the vac test with our old vac and the Dyson, we'd never buy anything else.