I just went through with the same decision, Pro or Air?
I chose the Pro with 128ssd for the following reasons:
Went to the apple store and spent about 1/2 hour with both machines
the screen looked so close between the two it was not a factor
the keyboard felt better on the pro and it is lighted (big +)
the processor is much updated on the pro (i5 big+)
with the ssd in the pro I have one of the big +'s of the air
so in the end the only negative of the pro is size and weight and i think the +'s made the decision for me.
I chose the Pro with 128ssd for the following reasons:
Went to the apple store and spent about 1/2 hour with both machines
the screen looked so close between the two it was not a factor
the keyboard felt better on the pro and it is lighted (big +)
the processor is much updated on the pro (i5 big+)
with the ssd in the pro I have one of the big +'s of the air
so in the end the only negative of the pro is size and weight and i think the +'s made the decision for me.