Jake's my favorite, no contest. Rachel's secound, but only in the earlier-nonghost-written books. I can relate to him the most and I seem to like Ani-books more from his point of view. I admire his responsibility and decency.
And I think he balances Cassie and Rachel by doing what needs to be done but also whats right. And then secoundly, I admire Rachel's solid inner strengh and bravery.