Always looking for better, Documents to Go lacks the fancy features, but is stable. I also have Quick Office Pro and like its word processing feature; however, the spreadsheet is far from stable.
As a teacher, I am always about in the classroom/school (rarely at my desk), and there are times when I want to type and word process while I'm at lunch, in the office, or sitting with a group of student afterschool. My main goal is to get the CONTENT down, and I can change/format/print later. Thusly, my word processing goals MAY be different than yours.....
Having said that, I use the Simplenote protocols....Macbook at work and at home are BOTH running Just Notes, iPhone is running Simplenote, and VTAB is running Flick Note. Thusly, I can be out in the yard and have an idea I want to get down to work on at home (via MS Word), so I'll start typing on my iPhone, work on it briefly while caring for my son (5 month old), and when he's asleep, start the formatting down via MS Word. I don't have to save and it syncs automatically, and all free.