After Rubio cosponsored with Schumer on an amnesty bill (that failed) he left me with a sour taste. Cruz is a lawyer that tends to get too technical in his speeches and lacks pizzaz in a campaign, but I suspect we need some depth in a President for a change. The best candidate does not always make the best president, e.g. the present resident.
Cruz for me as well. At least he is doing in Washington what he told his constituents he would do if elected, thus his unpopularity with the others in Congress. Also, while Rubio got elected by adhering to Tea Party principles, when he got to Washington D.C., he became influenced by the moderate Republicans and Democrats and bailed to help create a "comprehensive" immigration plan. I'm afraid that I don't trust him to continue to adhere to conservative principles.