I have used Tamiya XF-19 (sky grey) which seems a decent color for the Haze grey and Tamiya XF-63 (german grey) for the decks on my Modern USN ships and they have come out looking pretty good.
I have also used the MM Haze and its a good color. I just find tamiya paints (and similar brands like Mr. Colour) easier to handle and they are more consistent. I have had real issues with MM paints.
An example of one of my ships using the Tamiya combo.
