I have found this very useful in finding the important variants in a passage. In the below screen shot I have the NA27 and Scrivener 1881 open. I highlight the passage of scripture for my sermon (1 Peter 2:18-25) in the NA27. Everything not highlighted by the sympathetic highlighting in the Scrivener I consider worth taking a look at for the sermon as it could be the reason for a difference between translations those in the congregation are using. In this passage I found 3 variants worth examining in less then 1 minute.
