Yes, I have used two research paper writing services:

1. MyPerfectWords.com research paper writing service
2. CollegeEssay.org research paper writing service

I found them to be immensely beneficial. These services provided me with expert assistance from experienced writers who crafted high-quality and customized papers tailored to my specific requirements.

The services ensured timely delivery, which helped me meet my deadlines effectively. Additionally, I appreciated the professionalism and reliability of their services, as well as the option for revisions to ensure the final paper met my expectations. Overall, using these services provided me with peace of mind, saved me time, and helped me achieve better academic results.

I would rate the service quality of MyPerfectWords.com and CollegeEssay.org at 9 out of 10.