Ethereum has achieved it's All Time High this week and it has been a good feeling for me since I am a huge ETH believer.
But DASH is a good competitor to ETH since when ETH was $400 DASH jumped to $700 and now when ETH has raised to $750 DASH has raised to a whopping $950. DASH has been competing with ETH to see who reaches the $1000 target first. DASH is very close to achieve the target but ETH will reach the target soon. It will really be a good feeling to see ETH cross $1000 and the new year might be a boom with this achievement.
I think DASH is more about marketing and ETH is more about real world usage and tech progress. I think DASH is very overpriced right now. And ETH might be under priced...