I have a C49 and pair of MC 611's driving a pair of Kef Blades and am consistently wowed by the presentation. My room is 17x27x7'. The most recent 'expensive. speakers I've listened to excel with Mac components are the Dali Epikore 11 if you prefer a traditional looking tower with superior sound, price is nearly double the cost of the Blades.
Before buying the Mc611's and hearing how good the Blades could sound I had my pair listed on usam and a Magico owner reached out to me. We talked on the phone and he complained his $75k magico's didn't draw him into the music and he really wanted to try the Blades. I told him I'd planned to try my speakers with 1 more different source b4 selling them and sure enough the mac gear really woke the speakers up and I pulled the listing. My point obviously is don't just trust more money = better sound.