I have it. Reception is not as good as the LG VX-6000 (which has absolutely phenomenal reception), however the sound quality is definitely better.
The phone gets a little warm because of the battery. The older ones got REALLY hot, but those were recalled.
The slider is nice, but it's relatively difficult to get open with a single hand. The front is slick (no texture to the metal, it's finished relatively smooth).
Feel of the phone overall is relatively good. There's a little bit of wiggle when the phone is open, but it's pretty solid.
The speaker phone is more useful than I would have originally imagined. I thought I wouldn't use it at all, but it's a pretty nice tool.
Menus are better on the LG and others (ie. Nokia has awesome menus).
Size, shape, and weight are good. Nice form factor overall.