eWeek's Channel Insider posted a very positive review of Virtual Iron 4.2:
Adopters will find setting up Virtual Iron straightforward; an included quick start guide speeds through the basic elements and offers valid recommendations when it comes to “networking” nodes and even covers basic concepts, such as network cabling. The idea here is to make it difficult for anyone who follows the documentation to muck up an installation.

and

Volumes could be written about the product's options and capabilities and most solution providers would be best off to download and experiment with a trial version of the product to make sure the feature mix will meet their needs. That aside, solution providers will find the product stable and should not come across any significant bugs.

Click here to read the full review.