Vernor's ginger ale is the bestest. They have it at Reasor's, which is weird because it's basically unheard of outside of Detroit.
Mixes well with rum or vodka!
Motor City Madman agrees.
http://www.youtube.com/watch?v=W1l1t1gtmGY
I like a good orange cream, like Boylan's. For some reason Reasor's quit stocking the Boylan's Orange Cream, and just has the Orange. Not the same thing. I bet if I ask they'd get it back, but I always forget. Also any good cream soda. Otherwise it's RC or Pepsi (usually RC), never drink Coke if I can help it.
I cut waaaayyyyyy back on soft drinks about a year ago, and started carrying around a stainless water bottle everywhere instead of pretending RC and Pepsi was water like I did for years.
Oh, and I'd rather drink just about anything than drink a diet soda. WTF? That stuff has no purpose on Earth.