I used the edit orders mod, but like many, I found some bugs, so I ended up working on it. As far as I can tell, the latest version I released, 1.51, fixes all bugs, so it should work nicely. Dunno why Admin Notes doesn't work, as I don't use this mod, sorry.

I also considered super orders, but I choose edit orders for a couple of reasons:

1) I only needed to edit orders, and it seemed super orders does a lot more.

2) From what I've read, super orders does not allow you to edit every part of an order. The edit order mod does -- including add and deleting products.

Hope that helps!