The newer air-iette (tsk tsk) is better than the old ones. If that's all you can afford go for it. Get a shop adusted one by Marc Savoy.... Unless you can find the current model for cheaper. Current models have the metal plate which says "arriete." They seem to sound better and are better made

Thing is, if you really want to learn Cajun accordion you should get a hand made from LA, a couple good videos.

Problem is, the vids don't show what the air regulator must do very well. I keep saying this, but it's true. Use it slightly (when playing in and out a few inches) unless you're drawn out too far, then push it until you are back in the correct position with the bellows to play..