It's really hard to find anyone's positions on the issues at this early stage. I'm generally one of those voters that doesn't decide until the week or so before I get the early ballot. So from memory, the only one that has left a favorable impression on me was Giuliano.
He's got experience revitalizing Tempe and its economy, save the whole stadium disaster. He's also a pretty honest guy, though I'm not sure if his party switch changed any of that.