I own a 16710 (obviously very close to a 16700), and just recently bought a snowflake. What you have is one very tough decision!
The 16710 was my first Rolex and it's the one I've wanted since I was a kid, so you can probably tell where this is going...
The snowflake is amazing though. If you were to say 5513 or 1680 vs. the snowflake (in my collection), I would choose the snowflake. They are a bit more rare and most people don't know what they are, which is the perfect 1-2 punch for me. BUT the Rolex GMT is so iconic and it ticks off so many boxes that between the two, I would have to pick the GMT.
Of course, as I look at my photos and see the Snowflake on the strap, it makes me swoon and realize why I spent way more than I wanted on it...haha. Such is life as a WIS.
