Is there any more feedback on editorder2?

I've been searching the forum for hours and I'm not sure sure where to look - apologies in advance if it's been asked and answered before, if someone could point me in the right direction, I would be grateful.

I'm looking for something that will let us order customers orders:
- change customer details (and point to the right customer as I can do in super orders)
- let me add and remove products
- calculate the shipping accordingly (or at least let me add it correctly)
- recalculate the tax correctly (including shipping and low order fee) when appropriate (some customers are tax exempt)

At the moment we're having to do manual invoices any time something changes as the totals are all wrong.

Thanks for your help