Indeed, the most important thing about a television is its picture, and the data and all of your input regarding the B630 suggests it will be an excellent LCD. The chin is a matter of taste of course, and I suspect it will be less of a problem to my ex-girlfriend (certainly she'd prefer it to the speaker bar of a Sony Bravia). On the other hand, paying a decent amount of money, especially for a larger TV, I presume one shouldn't get a set one finds physically distasteful, especially if the TV is going to contribute significantly to the local decor, as TK's 52-inch certainly would.
That said, at the new Amazon price (and certain other vendors), the LN40B630 doesn't cost that much more than top-of-the-line 32-inch TVs. It would be difficult to resist the LN40B630 unless it were howlingly ugly.
Thankfully, Amazon is willing to credit the nearly $200 difference. They claim they have no price guarantee policy, but owing to the exceptional circumstances they're willing to grant my request.
However, it's past eleven now (ie after the delivery window) and no sign of CEVA. According to the tracking, it went out for delivery at nine this morning.
Update: CEVA arrived at eleven. My ex-girlfriend reports that they seemed inclined to drop off the box and go, but I had forewarned her to ask them to set up the TV. She does observe that the telly is noticeably red, but overall she is quite content.