Yeah, I´d say the MQ is the best shot. Just had a little comparison session. Now, they are in pretty different guitars MQ in a light Ibanez S series and the RY in a heavy ESP-ish LP. They do however share the idea of being classic at heart with the ability to bridge over to modern. So they do a similar thing in different ways. Since pairing a MQ neck with a RY bridge and vice versa would also work well this seems to be fitting.
The SM, as you mentioned, is a bit darker and also more rooted in the modern sound area, while the MQ definitely comes from the vintage world and is just versatile. Plus let´s not forget that the SM is based on a sound that was achieved using a MQ....;)