The best candidate I can see at this point is John Spencer, he was basically the "Rudy Giulani" of the New York suburbs and was an extremely successful and popular Mayor of Yonkers as well as a prosperous banker and decorated Vietnam War Veteran.
Cox would be my second choice but his biggest positive: instance name recongition from being son-in-law of a U.S. President, is also his biggest drawback (Nixon?!)
Pirro should run for A.G. of NY instead of U.S. Senate. The NY Republican Party really NEEDS a credible candidate to take the open seat with Spitzer out of the way, and c'mon, the "Westchester County District Attorney" is much more credible as a candidate for A.G. than a candidate for the U.S. Senate. The idea that she's the "only" candidate who can beat Hillary is silly. First off, ANYONE aside from Rudy is going have a big uphill struggle. Second, she's a little known RINO with a tainted husband. Cox and Spencer are just as credible.
Pirro for A.G. and Spencer for U.S. Senate.
I would be fine with that arrangement. But Spencer has zero chance, as does Cox. It is about celebrity and money, and neither can come close to hillary on either count.