Keys Magazine, a leading music magazine in Germany, reviews iZotope's updated RX 4 in the December 2014 issue. Translated from German:
"With RX 4, iZotope offers the most comprehensive restoration tool kit available. Version 4 includes an improved DAW integration and accelerated workflow. [Thanks to RX Connect] the familiarity of using a plug-in inside the DAW is now combined with the extensive editing possibilities in the stand-alone version of RX. iZotope's algorithms are always very precise when it comes to making the difference between a usable and a disruptive audio signal. Applied correctly, this tool gives you results that you wouldn't guess that the signal has undergone a restoration process at all."
See the full review here.