So what is the easiest way to get started? There are so many options available it's hard to decide, from a beginner's standpoint, which is the best.
What is the best option for simple wireless communication? That is, communication from a controller to move a robot, or from an arduino to relay information back to a computer for processing.
Drawing from your experiences, what's the 'best' option in your opinion?
Bluetooth would be the most flexible, however I believe xbee to be the easiest. Software wise xbee is exactly the same as serial an even allows for wireless reprogramming and the higher end ones have some serious range.