I dont have any experience using them in the VQ35.
However, i've had a set in a 2JZGTE and a 4G63.
IMO they are a waste of money. Im happy paying $4 for regular copper plugs, and changing them every 5,000 - 10,000kms.
To be honest my evo felt like it went better after putting in fresh coppers (and taking out the old iridiums that were in there).