I've never had a striker fired pistol. All guns I've had have been DA/SA or SA only. But the trigger on the Glock felt so nice and easy to shoot. That first DA pull on the Beretta really sucks, but the SA shots afterwards feel fantastic.
Let me just preface this by saying I like/own all trigger systems out there (excluding maker specific) and for defensive use I prefer either SAO or striker for the reason you just said. To get to that SA pull you've got to go through the DA pull and you're responsible for that round. Sure, tons of people (I'd like to think myself included
) shoot DA/SA guns well and fast but it's much harder to develop proficiency with in my opinion.
That's my verbose way of saying get the G17