Word processing app on iOS devices

Hello all: I am looking for a word-processing app for the iPad. I would like it to be accessible, handle txt/rtf/doc file formats and be easy to save and share among other iOS devices and the Mac via iCloud or Dropbox. I am not looking for a lot of bells and whistles in the app - just the basic stuff like the good old TextEdit. Please share your experiences with your favorite app. Thanks and cheers, mani