Dear President, I would like to make one suggestion for your next devonthink release: PLEASE create some kind of gimmick to insert xls files along with PDFs and RTFs. I always have a tought time with tables in the RTFs files. Every time I copy one from Word or Excel is the same tragic outcome: twisted and unformated tables. I look forward to hear news in this particular matter.
The Sheets feature in DT Pro and DT Pro Office (but not DT Personal) can import tab-delimited text files exported from Excel (or Numbers). Sheets resemble spreadsheets.
Comment: If you first convert a Word document to HTML, then open the HTML file in Safari and capture the page to your database as a rich text document, tables come over pretty well.