Today's New York Times had an article by my favorite travel writer, Joe Sharkey, which discussed the frustration many people have with the regional jets which are increasingly likely to serve as your mode of air transportation. Besides being cramped, there's little room for overhead luggage (that's about to change with a new model, the Embraer 190, being rolled out by JetBlue and United).
Actually, though, I kind of like regional jets. Here's why. Since there is little room for overhead luggage, and since passengers are always allowed to take carry-on luggage through security, you can generally just "gate check" your bags when you board these smaller planes. That means you just walk to the plane, and hand them your bag at the door. No worries about getting an overhead bin. And your bag is there when you step off the plane. Easy. Which is rare in today's travel world.