If you can go to GC (or any other shop for that matter) and play them, then that will be the best way of deciding which bass to pick. If you can bring an experienced bassist with you, then that's even better.
This. A guy I know that plays guitar spent a couple of weeks trying out basses wherever he could. Within his price range as well as under and over. I mean he tried everything.
We talked quite a bit. Gave my opinions and thoughts. This can be helpful but how does it feel to you? In your lap and hanging from a strap? How does it sound plugged in and unplugged?
As others have stated as well sometimes that extra 50 bucks can be a HUGE difference.