Make sure you install HTC X-Button. It will close apps completely for you. It's a free download, and I use it on my Mogul. You can set it to tap and close or tap and hold to close. Either way will shut down the program completely.
My bluetooth headset works pretty well, but I do get low volume drops occasionally. It doesn't startup automatically as much as the 700wx does though. I find I have to tap the headset to link the call if I answer it from the phone.
I did take some pictures with the Mogul, and it does a fairly good job. It overexposed in low light, and has to held almost perfectly still, but does a decent job if you need to take a quick snapshot. I like that you turn the phone sideways and use the display like a large camera viewer. Plus it has a flash which helps a little in dark photos.