Haha, the one line response to a wall of text.
KJW's M9 models are generally solid and inexpensive (relatively speaking), so it's not a bad choice.
A lot of people don't like how large the M9 is (especially the grip), or dislike the take down. So if you're able to, make sure you compare the feel of several different models against the M9 before you buy it. If you have access to a walk in store that lets you hold the models, definitely try it.
The M9A1 comes with a lower rail, which can make holsters difficult to find. For example, if I recall correctly, Blackhawk only made a level 3 retention holster for the Beretta 92A1, which may be too much of an encumbrance on your draw.