Vandersteen 5a. How refined a product are they

Im interested in this speaker and went to hear them at a dealers yesterday and they sounded only adequte. They seemed to disappear quite well for a large speaker and dynamics were incredible. They had the detail for sure, But lacked (dear I say- Magic!) I was wondering if there are any Vandy 5a owners who have been able to make peace with this speaker. It definitely Plays at louder levels without strain and thanks to the built in powered subwoofer, (12 inch bass drivers) I would be able to drive it With my moderately powered tube amps which otherwise would have some difficulty with a speaker with the 5a' s size and capabilities. I would greatly appreciate any info including some of the associated equipment which you 5a owners are using. Thanks