Out of the three mic's you have listed... I only have two Marshall MXLV67G and I like them very much. However, a while back I asked Harvey about the Marshall mic's that he has and this is what he told me.
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To the Marshall list, I would put them in this order:
MXL V69
MXL 603
MXL V67
MXL 990
MXL 1006
MXL V77
MXL 2003
While I like the V77 and 2003, I'll prbably start using those less often although I may retire the 1006 in favor of the 2003, but I'll hafta listen to them both side by side first. I'm looking forward to listening to my V67Gs again as soon as they get here.
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Remember now, the 603S and 990 are SDC mics, and the V77 and V69 are tubes. If you want more details, I have that too, but I'd have to dig for it... anyway I hope this helps you.
PS... all this stuff is on this mic board... you just have to search for it.