There are different types of IT professionals, and what works best for a game designer might not be the best toy for a code monkey. What do YOU plan on doing with it?
Many field techs in various industries still have to support installed equipment that communicates via a serial port. It's not a question of getting a 21st Century laptop, it's having to connect it to 20th Century systems. Most of the rail / mass transit '3C' gear our company has installed over the decades uses serial commo.
If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.
Best laptop - IT professional