Yes, Verbatim CD-Rs are crap, but don't take my word for it, have a look around with Google and you'll see. The burn relies on the burner/firmware/media combination: your burner is new so that shouldn't be a problem; your firmware is the latest version, so nothing to do there; what is left is the media you're using. What speed did you burn that media at? The burn log would be useful.
Also newer ImgBurn versions aren't just bug fixing, but they also add new features, so please install the latest version and preferably leave enabled the check for updates feature.