Thanks to Pugman's help, I've decided on Alinea, I was wavering for a while but his advice really made the decision easy.
The only question is to do 12 or 24 courses? Has anyone here done both? I called Alinea today, they said by the time I'm there in June, there will probably be an entirely new menu. I'm just wondering, with 24 courses, it has to be over four hours, is it entertaining the whole time?