No matter what the question there shall always be pros and cons. So much depends on your style of flying. Here is a suggestion for you. Set plane up so wing is at zero angle of attack. try it. Next change to slightly smaller nose wheel giving negative AOA, try it. Next use slghtly larger nose wheel now you have positve AOA. This should enable you to choose how you like it. Personally I think much of this is B.S. I don't find it at all critical. I do prefer slight negative though.