Something much too prim about Rubio. He sticks to a message of new ideas, but clearly has none of his own. You don't get to proclaim a fresh start if your plan is "Let's reduce the size of government, cut taxes, get rid of red tape and trust the free market in order to deliver bonanza growth and ban abortion." (not sure how the latter follows but it always does somewhere).
As tkc says, it's all very predictable. You get the same thing whoever you choose, unless you choose Trump or Carson. And what you get with them is even more fanciful. Whereas the usual suspects sprinkle fairy dust over the economy whenever they calculate their own supply side budget numbers so as to make sense of them.
The only somewhat sensible candidate is the also-ran, Kasich. No chance of selection from that voting bloc. And anyway, HRC looks a better choice in the general election.