Check out the K750i, w550i and you might be able to get a deal within 8k. Especially if you're exchanging your old phone.
Its a bit below your budget but also check out the K510i which I personally own. It's a very under-rated but well equipped phone and it comes at 5k!
So k510i

I own a k750i. It rocks. Costed me a pretty penny but what the heck? I earned it! I blew it
I'd recommend a
Sony too...k310i is a good deal but no expandable memory slot!
Nokia 6600 is also nice. I think
Samsung D850 will also suit your budget!:thumbsup: