Cellar Door still reigns supreme in my book, and I really don't think it's that much of a contest (ok, I've had some items from Maison Parisienne, but I haven't tried their croissant since I've never been there at a time when I'd expect them to be at their prime - I hope to fix that soon).
La Boulangerie's croissant-making is not what it once was. I've tried the ones at the newish Wilson location twice (the second time to give them, well, a second chance) and I've been horribly disappointed . . . horribly.
And this morning I finally got the chance to try one from Southern France Patisserie on Irving Park. It was very good, definitely among the top tier in Chicago. In terms of texture, it was outstanding-a light crispness, flaky and yet so tender. So why isn't it the best and what could be improved? I prefer the flavor at Cellar Door (the butter!). Also, it was a tad too greasy (I could get over this really easily, but still). The only other issue was too little salt, perhaps just an oversight with this batch . . . it happens. You can see I'm nitpicking here -- it's among the top five in Chicago and with an extra dash of salt, it would be competing for top 3 or so. Maison P, I'll be visiting you soon.