Give following details, so that FMs can help you better
1) Budget
2) Movie:Music Ratio
3) Room size
Since you are planning for space speakers, I assume you are more into movies and this system is not for the purpose of music. I will suggest like corElement to go for Onkyo HT-S3400 unless you have a big dedicated HT room which will demand 7.1 system. In such case, this speakers again wont do much justice. If you still looking for cheap 5.1 package (other than Onkyo) check Boston Acoustics soundware XS. It was available in Alfa at Irla few months back for Rs.18K.