Ceiling Speakers for Surround?

Currently, I'm looking to buy a 5.1 home theater set and I have shortlisted the PSB Image Series because of the budget and also best bang of buck reason. But here is the dilemma, I prefer to have ceiling speakers as the surround but I do not want to sacrifice for the performance. The main reason for ceiling speaker is that I do not want to have wires laying on the floor and also does not want to have speaker stand since there are kids around and my wife does not like as well. Anyone can give some ideas of some good ceiling speakers, how about the PSB CW60R ???

Or should I use the PSB B4 or B5 and mount on the rear top corners of the walls? I also heard that if mount on the rear top corner, it will be more flexible as the viewing location can be moved closer or far to/from the TV. And I also thought that I could use the B4/B5 for stereo in case I need to change/upgrade in the future?