The MacBook Pro family was recently updated (April 2011) to include the most recent Intel i Series quad core "Sandy Bridge" chips, improved AMD Graphics cards, more Hard Disk and Memory options, and Intel's new port with "Light Peak" technology (commercially branded as Thunderbolt) If you buy one now, you'll have a recently update computer that will the latest and greatest for quite some time.
The same is not true of a MacBook, which has not been updated in quite sometime. The MacBook is due for an update soon, and I would weight a few months before I would buy one.
MacBook Pro: Yes
MacBook: No.