The best Photo Paper and which one to buy

Photo paper is the paper used to print photographic images. It is produced by coating light-sensitive chemical on the paper. The chemical consists of silver halide salts that are suspended in gelatin material. This sensitive chemical is coated on to a paper or resin coated paper or a polyester support. These photographic papers are used for negative - positive processes where all black and white papers were manufactured.
Few papers are used for positive - positive processes where the film is same of the final image. Other few papers are used for positive - positive film to paper process where a positive image is enlarged and copied into photo paper. The standard photographic print size is denoted by a code called nR, where n denotes the length of the shorter edge measured in inches. The longer edge is twice or thrice the length of the shorter edge.
There is another series called super series denoted by SnR, where the aspect ratio is 3:2 and thus provides a fit for standard 35mm.
You can give different types of finishes for these photo paper, including Matte, Semimatte, Pearl, Luster and glossy. Matte prints give extremely low reflectivity while glossy prints are highly reflective.
The thickness of the paper can be single or double weight. But double weighted papers are easy to handle.Photo paper are not environmental friendly. If you burn the paper it will melt and produce very bad smell, as it is made by chemicals.