I have a cradle but never use it. I just leave it plugged into usb at work while i'm at work.

I would defidently look at WM6, it has beena world of better for me than wm5, espeicaly if your considering installing other applications on it. It's been significantly more stable for me, gets better battery life as well.

I bought my 6700 off ebay, just make sure you get the one that is designed to work with your carrier.