i m using nht for surround , if your placement good enough ,then it will be fine , the only time u need tri or dipole is for who have wall at the back and u can't set the surround back ,tripole can sound direct to the wall and reflect to u , if u set the surround back,there's no need the tripole .
3 萬蚊 i guess u can buy a power amp like parasound around 1xxxx or rotel and pre amp cary 11a around $25000. thats the highest cp ratio amp now a day .
i m not dealer don't need to push nht ......heheehe , hong kong people like england speaker, try mk , dynaudio and jbl, they all good . if nht not ok ,i guess i sell it long time ago ,nht hard to beat in the same price range ,only depends what kind of sound suit your taste . for me i need thick voice for sure (not much to choose already). check p.m