First of all, There is nothing cheap (I'm kind of offended) about the MacBook Pro. Not only is it expensive, but the product it self is top quality.
I got mine for school and I take it to class with me everyday. It's not heavy, the battery lasts at least 6 hours and I have had zero problems with it - which is amazing. All the Apple products work seamlessly with the mbp. The mb air is very light, it doesn't have the cd/DVD drive.