Theunitutor is an excellent website to success. Quality work from pretty smart people actually hurts. 1 negative thing - even if the price is good, extra processing fees and mark up a bit too high, so to use it often is hardly possible. I would recommend it as an urgent tool. Also, you have to be very specific about the due date, since by default it is giving too much time to finish the assignment.
I would recommend this website for research papers, projects.