This is for Christmas so prices might vary at future times.
Although the high-priced personal viewer experience sounds like it's a neat experience if you want your own gaming time while someone else is watching TV, it seems like the $200 display would be the better option for a number of reasons. Being of the old-school mindset where you turn on a TV for one process at a time, a simultaneous connectivity between multiple devices sounds like a bit too much is going on. If someone is watching TV and you're playing a game on the same TV in your "personal space," doesn't this affect things one way or the other? Can't you hear the TV, can't they hear the game, or can't you hear each other?
Personally I haven't the experience with either of these products, but based on your information it sounds as if the 24" monitor would be a nice gift for you and your family. You'd be able to share the 3D with the whole clan. You can each play or envision 3D gaming on the PlayStation 3. You can all enjoy 3D movie nights. Another benefit is, at least for the moment, the cost is the more inexpensive on this side. Movies and gaming for the whole family versus 3D for just one person... wouldn't Sony's monitor be the way to go?
And the Personal Viewer isn't hooked up to the TV. The personal viewer is the TV. so you can hook it up to the Playstation without it interrupting others. You could just play away from people but the name is called a personal viewer so I might as well play around people. It also has headphones attached to it so you hear the game or whatever you're doing.
But I believe you're right. It is inexpensive to do the 24" display. But it's not that big if you think about it. You'd have to sit up a little close. It's ideal for college students with a dorm.
I'm just so torn. The personal viewer is like looking at a 150" movie screen from 12' away. Expensive, cool v.s. inexpensive, not as cool. But for the price, that's kind of what you'd expect.
Around Christmas time, the prices might drop even lower, fingers crossed.