The rest of the spreadsheet editors
The spreadsheet editor in ByteSquared's $7.99 Office2HD is capable, but it loads files very slowly, so it's a pain to use. The app also lacks support AirPrint printing and PDF export.
BlackBerry's $16.99 Documents to Go Premium offers the basics, but no more. It's languished for several years and is not a good investment choice. It does not support printing or PDF export.