While ASUS is busy adding an optical drive to its Eee PC line, Dell is diving into the low-priced, optical-free, thin-and-light category with its new Studio 14z portable. The folks at Laptop Mag have taken the new laptop for a spin, and seem to like what they see. While its 4.4 pound weight isn't quite best in class, the 14z outperforms most of its brethren thanks to GeForce 9400M graphics and a "real" Core 2 Duo processor -- none of that weak sauce CULV stuff. The battery life isn't bad either, and for $750 it's easy on the wallet. You just have to