My money's on BitShares. I strongly feel easy of use and speed of transaction are critical to the ICO market. Unfortunately, I've got a suspicion the current ICO market is going to be stabbed in the back by scams and frauds. This may open the second position up to strong contenders such as BTS due to a black mark against eth. Further, I think the dominant market for using BTS is in China, and I think many of the strongest community members are in europe. So this will limit the impact of USA politics.