Are your (1) and (2) alternatives or are you planning to get both? You don't give any sort of budget.
A "portable digital recorder" usually refers to a self-contained battery-powered item that has pre-amplifiers, converters and a storage medium such as a hard disk or flash drive. It may also have its own built-in microphones, or just have inputs for connecting external microphones. You can export the recorded data to a computer for further processing or for burning to a CD. An example of a portable digital recorder is the Zoom H4N.
The Mbox series are not portable digital recorders. They are audio interfaces, and pretty basic ones at that. Unless you are forced to use one of them, you can do better by going for a different make and model.
I'm sorry I am not in a position to give opinions on different laptop models. Apart from cost, a big factor in your choice will be personal preference, but you will also be restricted by what models PT is supported on.