The thing I don't like about AG is I'm pretty certain they are still cast...? Someone feel free to chime in.
The Forgestars are rotary forged. So they are lighter and stronger than cast.
Just my 02.
Build: '14 M5 - Space Gray / Full Sakhir Orange / Alum Trace / Black 343's / Exec / Driver Assist / LED
Mods: SunTek CXP tint - Vinyl-wrapped door handle chrome - Macht Schnell 12mm spacers - Pedalhaus pedals - iND Cosmetic Package - Carbon Fiber Exhaust Tips - Coded by v12 - ExhaustMeister