I agree... compactness has a price. 1603 inches versus 2803 inches. The 1.1 Lb difference is also important when you have to lug it around.
Tell me about it.
My company issued me a Dell Latitude X300 -- slimline and small.
Then when I needed a replacement battery, they added 2 INCHES to back of the doggone thing. Now my PC is as big as those others that I used to make fun of.
Now if I want a good SMALL battery, I have to pay for it out of my pocket :(