It's my 4th week in Singapore now but I still have no idea where is the good place to buy a camera (both new and used). The only thing I have now is Lumix LX3 which great for what it is but I need something more snappy so I think I'm going to buy Nikon D3100. But D5000 price (used) is less than D3100. Should I get D5000 instead? And where should I buy it?