I have tried, over the past few years, planting plants in several different ways. I have tried transplated after they were fulling grown, tried planting bulbs, and seeds.
I would have to say that the Bulbs are my favorite. Some of the most beautiful plants come from bulbs. Also, once they come up they come quite fast, so you have a sense of instant gratification.
So, plant bulbs because they are very easy. The most important thing is to note the planting depth and stick to it!