Al, I know just what you must be thinking:
"How do I convince my wife that although I already have a stop tail CU22 I love, I also need one with a trem?"
Here's how:
"Hon, the body cavity for the trem installation, the different mass of the trem block, and the springs combine to give the guitar a different type of resonant peak, which is the point in frequency response where the high frequencies begin to roll off but are emphasized, and of course the 'give' of a trem makes the playing experience a little different, so the result is a very different vibe. There's also a tiny but more 'twang'."
If your wife is anything like mine, at that point her eyes will glaze over, and she will say, "You lost me at 'resonant peak'. OK, get the damn guitar."