Mobileburn has a review of the Panasonic X800, a 17.2mm thin clam-shell phone which, is (even up till today) the choice for Symbian aficionados who also like clam shells. [We don't like the Nokia 6260]
We were going to review it, but lost interest after we realised that it was not a feature upgrade from the Nokia 7610. It is, however, awfully attractive in real life; and the review might still happen. [We don't really like clam shell phones either.]
Mobileburn says that it has horrible battery life, a cool (but-possibly-fragile) spring loaded opening mechanism, a decent screen, is built well, has an underpowered processor and the standard Series 60 interface. Have a read.
We think that the interface is a good reason to get the phone. Nokia's UI without nokia! 
