Which camera is best among SLR and D SLR?

All of ThemAll digital SLR cameras are basically the same. The only difference you'll find will be the ease of use/accessibility of the controls, and other features like the built-in image stabilization of Sony and Olympus. Right now, Nikon and Canon have quite an advantage in the DSLR market due to their extensive lineup of high quality lenses, but if you're just going to buy off-brand lenses anything will do.

At this moment generally says that D300 of Nikon is the best digital SLR camera in the world. But the main thing of a SLR depends on its lens . If you wish to capture the macro shot , then it will be better that You should also use a separate macro lens worth Rs. 12000 to 25000. It mainly depends on your capacity. It's difficult to define 'best'. In terms of megapixel resolution, the Canon 5D MKII has the highest resolution among DSLR's at 21 megapixels. But it has well documented issues with auto focus on fast moving subjects. The Nikon D3S has the best auto focusing capabilities but 'only' has 14 megapixel resolution. There is no single 'best' digital camera. Pick the features that are important to you, your budget and your shooting style, then make your decision within the current lineup of the top brands such as Canon, Nikon, Sony, Pentax etc. You won't be disappointed.