Almost as good. KJV/RV. I love the Layout of this one. Words below from the website (not mine)I also wouldn't mind seeing a KJV/ASV parallel Bible.
Recommended Theological Books and Booksellers
The Cambridge Interlinear Bible. I recommend this convenient edition for those who want to use the KJV while taking regular notice of the text of a more recent version (the English Revised Version of 1885). Where the two versions are identical, only one line of type appears. Where there is any deviation, the Revised Version is given as an upper line of smaller type, and the KJV as the lower line. This method immediately indicates where variations exist, yet it is possible to read either version with ease