As soon as I read the title of the post, I instantly thought of The Messenger and Waiting for the End.
Even though a lot of people here do not like DBS, Chester did have some crazy vocal parts on that album. The most intense screams he has ever done are on Condemned, his soft singing is amazing (Too Late, Let Down, Into You, In The Darkness, etc.) but the two that really stand out are Give Me Your Name and Walking In Circles. He is absolutely amazing on those. His widest vocal range in LP is probably Given Up or maybe In My Remains. He had a lot of cool vocal parts on MTM too that were different for LP but amazing. He also did great in the ending of The Catalyst IMO.
Give me your name and walking in circles were the only 2 songs I didn't like. But I agree his vocals OOA was impressive. I would agree with in my remains as well. I feel were not touching on a lot of the older stuff were he did have some really impressive parts. Like Crawling and breaking the habit,
Into You definitely. The verses are fairly low, contrasted with an absolutely crazy chorus harmony that comes in on the chorus in the second half of the song. Seriously, that harmony is like...pre-pubescent choir boy high. It's also very subtle. See if you can hear it.