title: Does soCaseInsensitive greatly impact performance for a TdxMemIndex on a TdxMemDataset?
body: <p>I am adding some indexes to my DevExpress <strong>TdxMemDataset</strong> to improve performance.  The <strong>TdxMemIndex</strong> has <em>SortOptions</em> which include the option for <em>soCaseInsensitive</em>.  My data is usually a GUID string, so it is not case sensitive.  I am wondering if I am better off just forcing all the data to the same case or if the <em>soCaseInsensitive</em> flag and using the <em>loCaseInsensitive</em> flag with the call to Locate has only a minor performance penalty (roughly equal to converting the case of my string every time I need to use the index).  </p>
  
  <p>At this point I am leaving the CaseInsentive off and just converting case.</p>