Romney CLAIMS to fit the bill. I'm not decided on him. He seems to have changed positions too often, and he basically "gave up" during his Governorship.
Newt Gingrich fits the bill from a policy standpoint, but his personal life leaves much to be desired. I could probably forgive him, but could others? He'd get most conservatives and even probably most moderate registered Republicans, but Reagan Dems and Independents would be tough to get. Although, if anyone could pull it off it would be Newt.
Brownback does well on the social front but poorly on defense and is only "passable" but not great on fiscal and economic issues. The guy is also about as boring as the day is long.
Tancredo shines in all categories, but isn't a very "likeable" guy to most people.
Hunter seems to do well in most categories. He did support the Medicare plan and some of the other GOP big-gov't stuff, but I'm not sure how much of that is due to core values and how much is just going along with his President.
Rudy doesn't fit the bill. He seems OK fiscally, and good on foreign policy but fails in most other categories.
McCain sometimes comes across one way and sometimes another. He's a media whore and a loose cannon and isn't afraid of big government when it suits his agenda. McCain's number one issue is taking care of John McCain.