I like the sound of the other barn, for your wants/needs.
I'm always for using money wisely. This other place is cheaper. You get 2 lessons per week for a bit more than what you pay for one a week at this current place. That alone has me sold. Plus, the other barn has dressage available, so you can grow in your dressage...and they have shows lined up. To me, it just sounds like the other barn may be a better match.
That all said, before making the move, you should check it out. Take a few lessons there, meet some of the boarders and the people who show. It's not always what the facility offers that makes the place better. Often times, it's the people who fills that facility.