It is subject to your preference in your end product. Different mediums will definitely bring out different effects. Let’s start with easily accessible items ie; paper!
What does ‘gsm’ mean? – WEIGHT
Paper weight measurement is calculated in grams per square metre gsm or g/m². It ranges from 45gsm paper to 500gsm card. Just to note: GSM does not necessarily co-relate to paper thickness.
What does ‘mic’ mean? – THICKNESS
Mic’ is an abbreviation for ‘microns’ which is a unit of measure used for gauging paper thickness. One micron = 1000th of a millimetre, therefore 250mic = 0.25mm and 1000mic = 1mm. It is dependent on the various types of ‘bulking’ (Bulk is determined by many different variables in the papermaking process, including the amount of refining, the rate at which wet pulp is deposited on the forming wire, the degree of wet pressing, the extent of calendering and supercalendering (Manufacturing processes such as ‘calendaring’ involve paper being passed between high pressure rollers to compress the fibres, resulting in paper that is thinner and denser without affecting its weight per 1m².) as well as the fibrous and non-fibrous content of the pulp itself.) in construction of paper and it also dependent on the type of wood/paper pulp it is made from.
Hence, one brand of 100gsm paper can be thicker (in Microns) than another paper of the same weight (in GSM).