There are several other brands, like Lenovo or HP, but the most expensive of them all is of course the Apple MacBooks, which is usually a lot smaller than PC laptops but often cost 2x-3x more for the same amount of memory and processing speeds. However, many people prefer Apple and won't buy anything else.
I am always open-minded to PCs and Apple computers, I just evaluate each one individually to see if it is what I'm looking for. Usually I want something ultra-portable since I travel a lot. I don't like ones that have larger than a 15" screen because otherwise they are too big and difficult to carry.
When I finally decide to get a computer, I'm sure I will be able to find an Asus or other brand that will suit my needs.