burning cd’s

about a month ago i discovered that i could burn cd's with my laptop. sweeeeeeeeeet.
i went to buy blank cd's for the first time yesterday and was presented with way too many options...i just bought the plain ones, assuming the ones that said 'music,' or 'photos' were just a marketing ploy " more expensive.

someone let me know if i should buy specific cd's for specific burning projects, please. thanks!