I think 6630 will kill Panasonic X700 - better looks and camera.
What do you think?

I agree. The X700 is a bit outdated even before it is released.
The 6630 has 3G, 1,3mp camera, newer S60 version, stuff like that

Unless you prefer a clamshell format phone, in which case the X700 is more attractive. And if you prefer SD card memory cards, instead of RS-MMC, then the X700 has also an edge there also.