Upgrading the Saturn/Cursa3/Maia3 system that I had running my Vandersteen 1Cs with a pair of Exon 2000s provided a noticeable improvement. More punch, separation and detail. If I were you, I'd experiment with bi-amping the R7s with Exons and your Maia before selling the Maia. One tip: if you have a chance to try a pair of Vandersteens I'd seize it. I had a chance to do an A/B comparison in my home between my Vandersteen 1Cs and a pair of Rega R7s and felt the Vandersteens won. I thought the Vandersteens had more detail and better overall dynamics, although the R7s are certainly very nice.
