There has been a lot of debate within the cannabis growing community on what's the best sort of seed to use between Feminised or Regular Seeds. In all honesty, the best seed to use would be determined by what you want out of your seed. Each seed type has its pros and cons and here we will detail them and give a description of the seed type to allow you to be better able to choose the type of seed that would work best for you.
Feminised seeds came about during the 90s due to peoples frustrations with having to remove male plants as to not destroy a crop when they weren't looking to breed the plants. A feminised seed is a seed that only produces Female plants. This is done by adding a silver mixture to a female plant. This forces the female plant to grow pollen sacks like a male plant does. The pollen from this plant is then used to pollinate another female plant, this fertilises the female plant which in turn makes it produce seeds. These seeds are feminised seeds and have an almost certain chance of becoming a female when grown.
Regular Seeds are the natural seeds that come from a female cannabis plant once it has been fertilized. These seeds produce both male and female plants and are very useful for growers looking to crossbreed their own strain. To do this, growers first grow a couple of plants of each strain they would like to mix. They then use a male from say Chemdawg to pollinate the female of the other strain, say Master Kush. This plant will then be fertilized which will, in turn, make it produce seeds. The plants grown from these seeds will be a cross between Chemdawg and Master Kush. To produce good female buds with regular seeds when you are not interested in breeding you will have to remove the males from the crop as to not ruin it.
As you can see both types of seeds really have their own positives and negatives and to say one reigns supreme over the other would be misleading and wrong. You would really need to consider what you want out of your grow and work from there on what type is best for you!