I've bought about 30 gasket sets from Mizumo over the past few years, with 0 issues. Mostly EJ22 kits. I can't speak for anything forced induction, but their kits are good if you take your time and do it right. Eristic is another good brand, but their customer service is dog crap. Mizumo overnighted a timing belt to me when they sent the wrong brand with my kit, and didn't ask me to send the other one back.
What I would do in your situation, would be to contact Mizumo and request the MLS (Multi Layer Steel) head gaskets; if they're not already in the kit.