We just have to hope that the power of competition, together with the passage of time, will get us to a better place. I have purchased both Documents To Go and Quickoffice HD and both have their strengths and weaknesses but, due to the weaknesses, I don't find either entirley satisfactory.This thread is a testament to how poor the office apps to date are. OfficeHD, while imperfect, is the cheapest. Only really good for basic stuff.
I keep both apps installed on my iPad though, so that I can see updates as soon as the appear on the App Store, and I'm hoping that as both companies implement each other's best bits and add new stuff to try and leapfrog the competition, that solid feature-rich apps will result.
Sadly right now the rate of significant feature updates from both companies is discouragingly slow.
- Julian