Hey, I'm also a total NEWBIE here, and still shopping for my first handgun, but I can echo the advice given above "Shoot before you buy". I've shot a total of 7 different pistols in my search so far, and one thing that has become very clear is that a gun that feels good in your hand may not perform the best for you on the range. So, my word of advice is take your time and find a local range or ranges that rent guns and test out as many models as possible before you make a decision. When I started shopping, I was pretty much ready to buy a Glock, until the very nice guy at the gun store convinced me to try a few different brands on the range before I made a decision............now I'm very glad I did. The Glock which felt great at the counter, did not work for me on the range. I did really like the S&W M&P 9mm which is on your list, which is a gun that I had not even considered until I tried it.
Good luck in your search!