That depends on a lot of things..... Are you able to grow a bunch of plants and keep cuttings or are your resources limited so you have to grow feminized seeds?
If you can, get a few different bags of regular seeds from Bodhi, Mr Nice or something similar, find the nicest plant and keep cuttings for the next grow. This way you don't have to buy seeds all the time and you will have reliable quality. But you will need a 2nd tent or closet for the mother plant and clones. And it will take a while and not everything you grow will be great. But once you found a nice pheno you'll have all you need for an ongoing grow.
If you are limited with your resources get feminized seeds. They are also great if you want to try many different strains. There are so many options, just have a look around the forum. Your question has been asked so many times but there isn't really the perfect answer.