hypers aren't necessarily better cost v performance is about on par with forgies but for all round best piston you can buy forgies are the way to go (yes theres probably some super piston out but were talking about street cars here)
Forged are stronger with tighter grain than hypers though hypers are good they can be brittle not the best piston for boost if i was doing a n/a setup i'd look at hypers over forgies.
Forged are better for boost and tend to run a bit cooler more resistant to detonation.
If your interested i can look at gettting you a good price on some acl forgies if you want further info on this PM me