[HaXx]

The two can offer slightly different packages. Brz usually can be had with brembos and different (not sure if forged) wheels. The 86 can come with lowering springs and a trd catback/axleback exhaust. I think tires are different too. Fog lights and things like that are a consideration too. Sorry to be vague, but depending on your level of how much you care, you can look into what springs and dampers come on the package your looking at etc