Yeah, the w750i turned me onto SE phones in a big way, but then the w800, w850 etc were just tiny incremental improvements.
I LOVE the Cybershot / k phones. Sony Ericsson phones at 3.2 megapixels, stand up to a lot of these newer 5 megapixel phones in terms of image quality. And of course, the latest models are 5 megapixels themselves.
I also really love the user interface on Sony phones... by the looks of it, they're also throwing in an XMB style interface on new phones for managing media. Which I believe to be a good thing.
Despite all that, I went with the LG Viewty recently. It was free on my plan, and yes touch screen is a bit gimmicky and the flash based GUI is a bit iffy, but the phone has great features, a nice camera and beautiful aesthetic.
If Sony DO make a PSPhone, I'll look at it very seriously though.
Well that actually looks pretty nice. It looks like they could use some of the idea from this phone on the next PSP. I'm not saying that the D-pad shouldn't be in front, but veing able to slide the back and having extra buttons for other purposes(keyboard perhaps) would be pretty cool.