4Js
1625
I own the 5100g and...
I prefer the the 5100 for the following:
The numerals and darts
The equal balance between top and bottom of dial. I find too much oversize on the lower half of the new one
The blue color of the dial. But that may not be fair until I see the new one in the metal.
The case is a toss up. Really personal preference. But the 5100 seems to have a greater curve to the sapphire. That's a plus and minus since glare effects the 5100, but I find it so sexy
Just my opinion. But since I hunted for three years to get the 5100 that makes me biased!
Best,
Joe