I just picked up the Pro-651 at a store that was closing for 160.00 I am a beginner and having a heck of a time programing it. I think I got a good product at a good price. Now I just need to learn how to use it..
You definitly got a good price. I see you are already a "Premium Subscriber". As already suggested, get the RS 20-546 (approx $35 on eBay) programming cable to make things easier. There are two or three software apps to try and they all offer a 30 day, fully functional trial period. Before those 30 days expire, you will be a master.
But until then, expect some frustration and confusion at first. It's normal, don't worry you'll get there.
As for 651 vs. 396XT, I have both. Love them both, but in my opinion I do not find the 651 "FAR FAR better". Pretty close to equal. I like the size of the 396, but the larger 651 has a little bit better audio due to the larger speaker.