Having eaten at both Alinea and the French Laundry within the past two years, I'm going to put myself in the jpschust camp (this would be a whole lot easier if your nicks didn't look so similar at first glance

), but before hearing his explanation I suspect I don't feel as strongly about it.
What they have in common is an amazing level of precision. I think Achatz is every bit as detail-obsessed as Keller, though Keller's the one with the reputation.
The difference to me is that as wonderful an experience as Alinea is, and it
is wonderful, it's still very much an intellectual one, and it's structured as such. Achatz' cooking is very self-aware -- postmodern, perhaps? It isn't enough that Achatz has a dish with a bite that slowly changes character as it sits on your tongue. The dish is built in such a way that that the flavor progression is as clearly defined as possible, and very much the entire point of the exercise. Keller's dishes are just as thoughtful, but not in such an overt manner. I think he's more content to let you simply enjoy the dish, even if it's no less creative or meticulous. At Alinea, I found myself saying, "Wow, that's really interesting," whereas at the French Laundry, I found myself saying, "Wow, that's really wonderful." Which isn't to say Alinea wasn't also wonderful, but... you get the idea, hopefully.
Maybe it's a matter of maturity. That sounds condescending, but I really don't mean it that way (especially since I'm younger than both of them). Fantastic as it was, Alinea wasn't satisfying in quite the same way as the French Laundry. And I don't mean that in terms of volume or richness of food. I felt that Achatz engaged my brain like no other chef, but perhaps at the expense of fully engaging my soul.
But I also have to consider that I might have felt differently if Alinea's menu were pared down somewhat. I know the absurd number of courses is part of the fun, and each one was interesting in some way. There were very few I didn't greatly enjoy on some level. But sometimes you watch the extended director's cut of a film and find yourself saying that they were good cuts. Though I'm not sure, I wonder if that's the case here.
Dominic Armato
Dining Critic
The Arizona Republic and
azcentral.com