I sort of watched them out of order. I wasn't really privy to the existence of The Incredibles until my fiance wanted to rent the sequel...and then I went back and watched the first one.
I have to say that I liked 2 more, but only because it looked like a period pop art piece and the first one you really didn't get that feel. It was clearly set in the early 60s, but you didn't get that whole esthetic as much as you did in the sequel and that was the biggest draw I had to it.
That being said, it was't bad.
Sociopolitically I liked the line about when everyone has super powers no one does. It registered loudly to someone that works in history. So the plot, on that basis, was compelling.
And I am sure that if I had seen them in order I'd like it just as much.
The sequel, the main draw that sucked me in was the look of the film. Here it was the quasi-family struggles which, again, seemed to be highlighted a little better in the second film. Still, it was there enough, the work-life balance to draw you in, and the absurdity that the work was being a hero was entertaining.
As was the reason they had to go underground which, again, was done a little better than when the MCU tried it...but still not elaborated on enough to make it as interesting as it could have once been.
In any case, it's still an entertaining cartoon. And you can see where the creators took what worked in the first one and elaborated on the concepts until they popped.