Here's a review from CrackBerry of Jawbone2 that states what I expected: it's king again (LINK).
Update: now there is Jawbone Prime that is supposed to be great too. My Jawbone2, however, has been giving me problems and I can't figure out why--sometimes people can hear me really well, other times not. I'm unsure if something is wrong with the device and producing intermittent sound quality for my voice. Thinking about going back to wired . . .