a 40S&W is a bit much for a first handgun.
It may be my first handgun but i've shot my dad's old S&W model 18 .22LR handgun quite extensively before I even thought about getting a handgun. I like your idea about a 9mm, I originally wanted a sig p226 in fact, but my 4006 has some sentimental value because my brother gave it to me as a gift for quite the reduced price.
I don't always get to the range, but when I do, I prefer dosAK's.
They say 5 out of 4 people are bad at math, but what do I know?