Do you have a size preference? In my opinion the best Corsair plan available is the 1/6th scale F4U-1 offering from Brian Taylor. Jerry Bates is getting ready to release a 1/5.5 scale F4U-5 plan as well which I am sure will be very scale in outline. Neither the Meister or Ziroli designs are particularly scale in my opinion but each person has to decide for themselves if they are close enough. As Tom noted above both designs can be made more scale with a bit of work on the part of the builder. The best Zero plan readily available is probably the 1/5.5 scale Dave Platt design. The Meister Scale Zero looks pretty good to my eye, certainly much more accurate than the Corsair, but I have never really made a detailed comparison of it with the full size airplane. That's my .02 cents anyway.