I am planning to buy a mobile phone within Rs 10,000 either from nokia or sony ericsson.good battery life, a good music player, and a camera to go with it is what I am seeking.please suggest me what will be the best.

I have moved your topic in Mobile Q&A section. Hopefully you will get quicker response there.

Look for Nokia 5320 . It supports 3g ie.HSDPA and one of the most feature rich phone in this price range.

Yes Nokia 5320 is a good phone

If you are not stick to only two brands then you can look for other new brands like lava, karbonn, spice....etc

Nokai 5230... No WIFI but great phone at 8.5 k!!

Uh.. Is that 5320 or 5230.. oh me!