Definitely, I had considered the pm7000n + oberon 5 combo before opening this thread, but since I need a desktop solution at the moment, I thought the oberon 3 would suffice. Anyway, I will choose between the luminas ii, linton heritage, oberon 5 and diamond 12.4 in my next setup.I echo the recco.
Marantz + Dalis go really well together.
I have 2 combos.
Marantz CR610 + Dali Oberon 1s - in my study.
Marantz PM7000N + Dali Oberon 5s - in my living room.
I am very happy with both.
I thoroughly reccomend the Marantz PM7000N + Dali Oberon 5 combo for your requirement.
I tried adding a QB12 sub, but the sub was too powerful.
I have now replaced it with a Dali C-8D sub.
It blends nicely together and fills out the bottom end without making itself visible.
Do give this combo a try. See if you can audition somewhere.
Btw, interest take on the C-8D over the QB12. Point to be noted.