Help deciding on which Milgauss

[jasonwatch]

I'm looking to purchase my first Rolex and am drawn to the Milgauss for a variety of reasons even though it is not usually the most popular choice especially as a first Rolex watch. I was fortunate enough that my local AD had both the blue and black dial in stock, so I was able to compare the two. I'm still debating between blue or black dial, but am slightly leaning towards the black dial GV. This is where my question comes in. What are your thoughts on the original style black dial GV with the dual color lume vs. the new style black dial GV with the single color lume.

Also, does anyone happen to have seen both and have an opinion on brightness and longevity of each?

Finally, I realize that the dual-color lume would require buying second hand as it is no longer made. I'm guessing that since it is pushing 10 years old, it would be due for a servicing immediately upon buying unless I was fortunate enough to find one that just got serviced? Any difference in buying M/V/G/Random serial?