AP automation tools

I'm looking for recommendations for AP automation tools. I'm looking for software to capture an invoice image, do some OCR magic to parse out the data, voucher, and have some type of workflow to push exceptions to the correct users for approval. The tools I've heard of include Esker, Hyland, Scanman (Forza), Canon, IntelliChief. Anyone have any advice?

Thanks

E1 9.2