Here’s something you’ll find interesting.
While Mac’s don’t support USB 3 yet, USB 3 is backwards compatible with USB 2, which your Mac has.
Well, USB 3 used in under USB 2 conditions (which I’ll call USB 3/2 to save typing) is much faster than USB 2.
For example, the ADATA S102/16GB USB 3 memory stick is about 50% faster than even the fastest USB 2 stick I’ve found.
And for more of a surprise, how about this: the $19 Transcend USB 3 card reader (TS-RDF8K) is nearly twice as fast as my fastest USB 2 card reader (500MB copied in 11 sec vs 20 sec.)
So, if you’re into moving data from your camera faster, get a USB3 card reader even if your computer doesn’t support USB 3 yet.
As usual, however, YMMV.