@imtishal: Sony H-7 Rs 24500, H-9 Rs 30000.
@sd: High ISO sounds useful, but anything above 400 ISO is very grainy and has lot of picture noise, so practically its not of any use. Its better to use manual control or night mode and use a tripod instead, if you want good night pics without flash.
Sony H7/H9 have upto 3200 ISO. Give me your email, i'll post a few sample shots taken in low light.
Further, the best cameras come from dedicated camera manufacturers eg. Nikon, Canon, Olympus, Kodak, but only the expensive range. In budget range they make lousy cameras, just to capture the market. So in 10-15K Sony, Panasonic are better, and above 20K Nikon etc.
I have a Sony H7. Personally, I like the Kodak cameras best, but they are hard to find. There's one on www.galaxy.com.pk