One more thing...
In the Mexican section of my grocery store they carry an even smaller size macaroni noodle. THAT's my favorite! Either that or the very smallest shells.
Be sure to make the dressing separate and not throw it all in the macaroni - that makes a huge difference too. And rinse your macaroni under cold water first...it helps remove the starch so the dressing doesn't end up so dry.
If you were closer we'd make it together! I could really use a big spoon of it right now! It's like a hug from my Mom!