Hi AuntConnie
I don't even pretend to understand that "overlapping generation", "new light on the Rapture", "annointed in charge of the Sheep now, but Jesus has not authorized them until his Second Coming" garbage. I'll leave that to others to debate!
I haven't read Ehrman's latest book, I believe it covers the topic of the historicity of Jesus as a person (something that Ehrman believes is true). I understand that it's only available in ebook form.
As far as Metzger and Wallace are concerned you have to remember that both men are/were believers so their opinions about the veracity of the scripture is necessarily colored by their religious beliefs. (BTW Daniel Wallace didn't write "Misquoting Jesus", Ehrman did, although Wallace did write a scathing review of it.)
My own opinion (notice I said opinion) is that there is pretty good evidence that what we have today in the way of manuscripts is fairly close to what was available at the end of the third century. However, as slimboyfat pointed out above, the likelyhood that these texts accurately reflect what actually took place in the first century ranges from 'doubtful' to 'No way in hell', nor do we have any way of knowing how many changes were wrought in the first three centuries. One only has to examine the Synoptics vs. John or Acts vs. Paul vs. Deutero-Pauline to see that the contradictions between them render the narrative as a whole to be dubious.
As slimboyfat pointed out too, there are passages in the scripture that simply are highly unlikely to have happened like Matt 21:5. Another one that really gets me is John chapter 3 where Jesus uses the words 'born again' where in Greek the word 'again' (ανωθεν) has two meanings: 'again' or 'from above'. Nicodemus gets confused as to which meaning Jesus is implying. The problem being that only if Jesus and Nicodemus were speaking to each other in Greek would this have been a problem. It's highly unlikely that this would be the case, they would have spoken to each other in Aramaic, their native tongue.
CyrusThePersian