Beside Vinnie, Ron and Louis, whose ears I trust, have experienced and have been very impressed with the mod wireless SB2. That's alone good enough to make me believe in the superiority of the new technology done right.
If I were to choose between higher sound quality and more convenience (remote control, all in one box, etc.), I'd pick the sound quality anyday. But that was the recent past.
Now that we have got available sound quality that is even better than the pure DC transport/DAC combo, in a wireless package than has been operating flawlessly for months (and sounding awesome), I don't see why I will keep sitting on the fence. Superb sound, portability, convenience (remote control, access to entire CD library with a few clicks away), I think it's a no-brainer win-win situation.
I've seen high capacity hard drives with prices getting lower every week. Internal hard drives are certainly less money, but I opt for external drives instead. I can see someday I will take with me my music library stored in one or two such drives to a cousin or friend who also has an SB2.
When I listen to music through an AC system, with all of my expensive power cords, conditioners, and other AC-tweaks, I can still clearly hear the difference at late night when AC is less contaminated. That's why I totally agree with Vinnie's battery approach, "The best AC is no AC at all". By the same token, "best wire is no wire", hence the choice of wireless. Of course, with the condition: only when it sounds better.