The Clie has standard palm sound. blip blip blip, has a neato jog dial that really isn't very useful, but is kind of cool.
The nicest thing is the fact it uses memory stick, so you can go and get bigger memory sticks and carry info back and forth to use. Unfortunately, unlike the flash module the handspring uses, you can not run programs directly from the memory stick, but the transfer rate is fast enough that it doesn't matter. If you were looking at the palm Vx, then the clie is a better choice. But, the argument goes, for 100 more, you could always get an ipaq.
the sony is awesome as a palm os system, stylish, and a good platform.
i guess if your willing to pay for it, it's a great thing. They just lowered the price too, and that is a good thing.