First get this fact straight that Altec Lansing and Creative speakers are the only best in market. They do have a brand value but its indicator of their performance.
Anyways under 1500/- you wont find any good Altec or Creative model.
I suggest go for Umax Powerbeats UPB 3200. Its a 2.1 Speaker system with 30 Watts of output and Frequency response of 30Hz - 18 KHz. The Subwoofer is an 8.5 inch wooden cube with 5-inch driver enclosed within. Result: A warmer bass and clearer highs and mids.