Unless restricted to space please avoid soundbars.The omph factor simply isn't worth it.
If price is no issues and space is,then the Harman Kardon SB16 Soundbar with its wireless sub-woofer makes for good choice.
If you have decided on Philips HTS - 7140/98 its advertised ambisound and 3d makes for a very lame effect.Stay away if you cannot settle for soundbar without dedicated subwoofer.