Just Purchased a 13" mba absolutely nothing wrong with it except the tiny creaks being that its so thin.Portability isnt an issue with me so i feel i should have went with maybe a 15" pro. I love how fast the ssd is, my question is do any of u know if the 15" will be that much more sturdy(build wise) and is the speed a big difference with the HDD instead of ssd? Any input will be highly appreciative thank you