Depending on your budget, you can decide and choose from the many brands available in stores....Yamaha / Sony / Panasonic / JBL / Bostons etc.....these would be powered ones...alternatively you can purchase an entry level AVR with 5.1 speakers to enjoy a true surround / dolby experience....the key is to audition and demo as many systems and make the right decision. All the best!
Not necessary...but from a future perspective, thinking long term, perhaps you can invest in an entry level avr + speakers (yamaha / onkyo / pioneer) and enjoy the experience with a host of connectivity options..
Welcome....with Diwali round the corner, there would be good offers on entry level AVRs + Speakers at Reliance / Vijay Sales / E Zone etc....check also with the local dealers....make sure you audition before buying....all the best!