Getting a custom research paper is something has a number of advantages, with the most notable being that is saves you a lot of time, and enables you to engage the services of someone who is a professional, and therefore is good at what they do in a way that others are not. Less obvious advantages include the fact that professional writers are used to using citation styles and reference pages, so will be able to format the paper correctly, and that they will work with you to make sure that the paper is perfect.
A custom research paper means trusting that other people will do your work for you and do it well. The writers themselves will do every last step of the work if that is what you want, but you can offer bits and pieces of research and instruction if you want, to make sure that the paper will be taken in the correct direction. Having a paper done by a custom writing service means being able to take advantage of the speed and accuracy that they promise, as well as the collective experience of the team, rather than needing to rely solely on your own abilities.