diff --git a/DOCS/xml/en/encoding-guide.xml b/DOCS/xml/en/encoding-guide.xml
index 452f64b88b..5b6c7685ab 100644
--- a/DOCS/xml/en/encoding-guide.xml
+++ b/DOCS/xml/en/encoding-guide.xml
@@ -3658,7 +3658,8 @@ random differences in the achieved bitrate.
   This is usually enough to be visible.
   </para>
   <para>
-  <option>subq=6</option> is the slowest, highest quality mode.
+  <option>subq=6</option> is slower and yields better quality at a reasonable
+  cost.
   In comparison to <option>subq=5</option>, it usually gains 0.1-0.4 dB
   global PSNR with speed costs varying from 25%-100%.
   Unlike other levels of <option>subq</option>, the behavior of
@@ -3670,6 +3671,14 @@ random differences in the achieved bitrate.
   in low-motion scenes. Note that it is still recommended to always set
   <option>bframes</option> to something other than zero (see below).
   </para>
+  <para>
+  <option>subq=7</option> is the slowest, highest quality mode.
+  In comparison to <option>subq=6</option>, it usually gains 0.01-0.05 dB
+  global PSNR with speed costs varying from 15%-33%.
+  Since the tradeoff encoding time vs. quality is quite low, you should
+  only use it if you are after every bit saving and if encoding time is
+  not an issue.
+  </para>
 </listitem>
 <listitem>
   <para>