Common Lisp or Scheme?

I'm going to get some basics on functional programming. But there are too fucking many LISP dialects. I know all in all it's all the same shit, but between the two, which one should I use for these little studies?

(And yes, SICP is part of them)

>>22
If you think syntax is everything, you have a lot to learn.
In case of Lisp, syntax is everything, else macros wont be possible. Lisp also has pretty othogonal semantics, but here are more othogonal languages: for example, Smalltalk and Forth have less core constructs than Lisp.