I'm in the process of evaluating software packages for automated trading. I wrote several strategies in both NT and OQ. I'm at the paper trading stage.
1. I would agree with everyone that NT's documentation is much more complete. I haven't made a final decision on what I'll use in production yet, but I have passed on OQ for now. The last straw was the amount of time I've wasted (and insecurity I feel) because of the lack of documentation.
2. NT is more mature and stable (the documentation is just one example of that). I experienced several (non critical) bugs in OQ. These bugs were fixed within a couple weeks of discovery. This is to be expected given the rapid development of new features and releases, but it makes me a bit nervous.
2. No debugging using Visual Studio with NT. Significant bummer. From what I can tell, they are not likely to add this soon. With OQ you cannot debug within the development environment, but you can attatch to OQ using VS and debug a strategy while running.
3. Much more active and helpful forumns on NT. You get almost immediate and helpful answers to questions on NT forums.
4. I found NT easier to use (aside from no VS debugging). I am a professional M$ developer, so coding is not an issue. But, NT offers a lot of little features that over and over I found I needed to code myself in OQ, when all I wanted to do is test out an idea. If the docs were better in OQ this would be fine, but trying out a lot of ideas in OQ means doing a lot of screwing around to figure out how the tool works (with minimal help).
5. I second the person who spoke about better strategy evaluation statistics in NT.
6. In my opinion OQs strength is it's eventing model. It gives you control you just don't get with NT. The flip side is that with all that control you have the requirement of writing (debugging, maintaing, testing) a lot of code. This difference is especially apparent when you compare how much effort is involved to implement fairly standard exit strategies. NT is clearly playing catch up in this area. I have read on their forum that they are adding new events.
7. No multiple strategies in OQ. Unless there has been news in the last month or so, I would be not have high expectations of them adding this feature soon. That feature was announced in the spring, and it's Nov now.
I'd like to hear peoples experiences with RightEdge. I'm not likely to work with a just released product in a production environment, but you never know...