I just talked to Jason Heffner about this last week.
Personally, I would look at a tuner who has DONE what you want (i.e. beat up the pistons and had them not fail). I would say Henn*es*y, Heffner or Doug Levin would be able to tell you plenty about forged pistons.
I would also bet 2 out of 3 probably recommend the same brand and the 3rd would say "yeah those are real good too". And so you have your answer
Bear in mind most folks change their pistons for boosted applications - and if you do that you probably want to use low compression pistons. LC pistons would LOSE you power on an NA engine. So don't change em for power alone figuring you can get the car boosted later, since there are different factors to consider (compression) for boost vs. NA strength.