grand prix gt or infiniti g20t

Hi everyone I'm new to this forum but I have a question. I have a choice between a 1999 Pontiac Grand Prix GT or a 1996 Infiniti G20T. I don't know if there are any advantages or disadvantages for one or another. Any feedback would be helpful. Thanx

Grand Prix is faster and cheaper to repair. Infiniti is offered with a manual (if you care) and gets slightly better gas mileage. Grand Prix has a bigger trunk and the sedan has a bigger back seat. Infiniti is a little more nimble but they have similar high speed road holding.