Here's an informal little poll:
What's your favorite composition by a gypsy jazz musician (excluding Django), and why?
I have to go with "La Folle" by Baro Ferret. It's like a cubist painting; it takes the familiar language of musette, fractures it, and presents it in a totally novel way. It's a waltz, but for dancers with too many legs. The best part is that for all its obtuseness, it still has enough recognizable features to make it accessible and memorable. Sure, inventing a new language is impressive, but I'm more impressed when someone can take the same words that everyone else has access to and say something I've never imagined. For my money, that's what Baro did with "La Folle."
That's my spiel. Anyone else care to dance about architecture?
P.S.: The adventurous should feel free to follow up with this: What's your favorite non-gypsy jazz version of a Django composition?