Im going to hawaii next year and would like to hear what of the above bikes has the best aerodynamics? (sorry for my poor english)
Personally, I’d mix the 2 and go with a Snowcone Shiv! It’s HOT over there! 
I think they are pretty close in performance, according to the “aero-chart” and wind tunnel testing, but I would probably lean toward the tri-specifi Shiv if I were going to buy one.
My guess is if you have a very low position, and pay attention to placing you bottles aerodynamically the nosecone shiv is a touch faster.
If you would need a higher position and or carry more than 2 bottles the tri shiv would likely be faster.
All in all it probably comes down to a minute or so either way, so don’t agonize over it.
Thank you for your replays!