Really pleased with the service and product (iPhone unlock) provided by this company.
They unlocked my iPhone (where others failed) and it works perfectly. I even tested the claim that the phone remains unlocked even after a firmware update. Just updated my iPhone 5 to iOS 6.0.2 and the unlock is still in place after the upgrade.
Did exactly what they promised and the unlock is permanent.
A big thumbs up from me - highly recommend company.