Not sure that any Vandy is really a rock speaker, but i never heard the 5 series (owned 2s and 3Asigs/2Ws). If the latter did not float your boat, then the 5s probably would not either. 17 x 25 is a good size room, $7k is a good size budget. If you are talking used, I would recommend Von Schwiekert VR 4 Srs, which seem to be available in that price range.
What speaker to buy to start over.
I am selling my entire system and starting over. I am considering Martin Logan Summit speakers. Any other suggestions in that price range. I listen to mostly accoustic and female vocal but do listen to rock,jazz and classical. I am going to build around the speakers.