Looks like you're referring to one of those highly expensive "premium laptops". It usually features HD display, big screen, high end mobile GPU, etc. And on top of that, it's priced at an overwhelming >$2000. Bite that, MacBook! :lol:
The downside is, besides expensive, is the size and weight. Yes it's slim, but a 17" laptop can't possibly be lighter and more compact than a 10" netbook, can it? Unless it's built using flexible rollable materials and lightweight space metal, you'll have to deal with it.
What kind of applications do you usually run? If it's some light office apps with browsing and light gaming, A 14" i5 with 4GB of RAM would be more than enough. That would be the sweet spot. Unless you have the budget and heavier preferences, this could be your best option.