I use Finereader 9 full version, with an Optiscan 3600. Error rate for me is around 1 in 5 pages for straight text. Since I am one of those "zero-defect tolerance" people, it doesn't save me any proofing time, but fewer changes.
Finereader 10 has "cloud" features, so I am not interested. I use Finereader on my "sterile" machine...