My top rated R&B albums from the 90s and early 2000s come from three different boy bands: Backstreet Boys, NSYNC, and Blue. They incorporated R&B and pop into their songs which was very catchy and still is. I do not have a specific song or album from the groups that I love the most so I would just say that I would pick the Greatest Hits from each band since it incorporates all their top rated songs.