Master Beginner has spoken. Hehehehe. Madami kang options lalo na sa 2nd hand market.
Pero kung gusto mo branded na bnew sir, baka meron pang MS Premiere sattelite + sub set sa Robinsons Pioneer. The sattelites can play quite low for sattelites, and are of the sealed design kaya baka mas madali i-integrate. Pakinggan mo na lang. At least it would be a serious step up from most HTIBs. I think the set costs about 18k (or less). Samahan mo na lang ng entry level AV receiver, meron mga bnew old stock na kasya pa sa budget (or raise the budget by a bit for a current model unit). Yung source, may DVD player ka naman siguro diyan na natatabi. NMT na lang or bluray player sa future.
If you have a bigger room, or bigger plans tapos di naman madalian... use your money on a nicer receiver and front speaks muna. Tapos dagdag ka na lang ng center, surrounds, and sub later on.