Page 1 of Decoder and speaker advise

I have a toshiba 220 DVD but want to add a speaker package so I need speakers and a decoder for the dolby DTS stuff.

Any advise on what to get? I like the price of the Sony Babe system but am worried it isn`t powerful enough (room size 5m by 3m).

I really like the Aego P5 reviewed on here and can get an ex demo model cheaper at £430. Is it worth the extra debt on my credit card?

Any clues or alternatives? My budget is nearer £200 but can go to £430 if its genuinely worth it.