The only way to transport a typical lacrosse goal is to remove the net, completely take it apart, and reassemble it after you've moved it.
The main benefit of portable lacrosse goals is that this isn't required. Instead, these goals either pop up (and down) or fold together so you can easily transport them.
If you are frequently using your goal in different areas, your best option is to get a portable goal like one of the ones listed above. If you only need a goal for one spot, such as your backyard or a practice field, then either a portable goal or traditional lacrosse goal would be fine.