You are comparing apples with oranges - both are excellent speakers, happy owners of Prodigy's will also say "they are the most natural, nonfatiguing, cohesive, MUSICAL-sounding speakers I've ever heard. Keep them!
I have owned Prodigy's in the past and moved to Soundlab's A1 PX. May be the Vandersteen will have better bass frequencies, and can handle heavy rock better than the ML's, but my preference would still go for the Prodigy. The choice will depend on owner preferences and room acoustics.
BTW, did you ever heard the Prodigy's with the Descent subwoofer? It takes them to a new world.
I have owned Prodigy's in the past and moved to Soundlab's A1 PX. May be the Vandersteen will have better bass frequencies, and can handle heavy rock better than the ML's, but my preference would still go for the Prodigy. The choice will depend on owner preferences and room acoustics.
BTW, did you ever heard the Prodigy's with the Descent subwoofer? It takes them to a new world.