I know exactly what you're talking about comparing the GR07 bass to the W4.
No, the mids aren't recessed at all. They are very comparable to the RE262, which has the best mids I've heard in a universal. I loved the intimacy of the W4 mids, they were just lacking some clarity and transparency. The treble on the W4 is weightier and the treble on the Merlin is lighter, crisper and airier. Both are very well done.
There goes my wallet.
Thank you so much for the replies, invaluable!