I use docs to go exclusively and have been for years so I can't compare it to other options, but I use it for a budget excel spreadsheet and recipes. Instead of storing documents on my device, I store them in Dropbox. Very hand for the budget spreadsheet as I can access it from my computer, my phone or my Kindle Fire HD. And the full version of Docs to Go allows me to password protect the document.
I'm not doing anything complicated or complex. Just straight adding and subtracting and no special formatting. While you can do some formatting there will be limitations. For the average person it should be quite adequate.
A forum community dedicated to Amazon Kindle owners, authors, and enthusiasts. Come join the discussion about publishing, audio, troubleshooting, models, styles, reviews, accessories, classifieds, and more!