Lenovo typically brings a lot of new product releases to CES. And it did it again in 2015. However, there was one particular highlight: a 13-inch laptop with top-end specs, but somehow weighing in at 1.7 pounds.This is Lenovo (and NEC's) slender LaVie HZ550. For reference, that's 43 percent lighter than the latest MacBook Air -- and in person you'd think it was a dummy laptop shell. Despite that, the laptop still packs fifth-generation Intel Core processors: It's got muscle too. Was it the best PC we saw at CES? We think so, yes.