Thanks for all the replies and advice.
I'm still not 100% on which one I'll choose. About modding, I'm strapped for cash. Probably the only things I'll be able to afford are intake and exhaust.
I completely agree, the GSR would be so much more fun to drive. But 0-60 in 6.5 stock also attracts my attention. And a CAI could help it on the high-end. I have a feeling it will boil down to my parents.
I can get about $2,500 TI off my dad's old van, and let him have the Galant (since it technically is his car). So that should help the price a little.
Last question:
How is the leg/headroom in the GSR? I'm a 6'1" guy and I was horribly cramped in my aunt's civic. I would go and see myself, but the dealership is about an hour and 30 mins away.
-Enk