DA5000 Pro - around 10k
Philipts HTS 3451 - around 12-13k
Logitech Z906 - around 15k
What DA5000 Pro does well is it produces punchy not boomy bass , gives awesome sound effects for games and movies alike , is good for music if not exceptional . Is supposed to be the best buy for 10k budget HT. But where it lacks is the type of inputs , supports only RCA/analog inputs , no digital inputs so cannot connect to a console or new Blu ray players which are coming out.
The HTS 3451 has good specifications , u get a blu ray player at that price , have never auditioned or read reviews of same so no comments on the same.
The z906 according to reviews is a touch lower than z5500 , but if u have not heard z5500 i really doubt it would make much of a difference , going by the reviews , the subwoofer keeps giving way too much of bass (boomy but not muddy i guess) , is completely majorly in favor for gaming use , is good for movies and ok for music. However you get digitial inputs for the same as well as analog to be used with PC/Console/BD/DVD players etc.