For the 5 channels,You should buy speakers that are either 6 or 8 ohms in impedence with power rating = 100W. Sub-woofer (0.1 ch) can be any that suits your liking, and budget. An active sub-woofer of rating 150W to 350W should be good enough.
Now the whole set can be one manufacturer and sold as a set or a mix and match. You have no indicated your budget.
If you are in the Rs. 50k-100k range and wanting to go for a full set, I can recommend that you to audition the following:
1) Energy Take RC Micro 5.1
2) Paradigm Cinema Ct-110 5.1
3) Polk Audio RM series
4) KEF KHT2005 or KHT3005
5) Q Acoustics Cinema 2000
6) Definitive Technology ProCinema 600
7) Wharfedale RS-10
Really, the choice is endless. Contact member spirovious who can aid you in finding the outlets that can demo and sell the above.