Unfortunately, I can't give some sort of comparison since I have not yet used coinigy. But what I like about tradingview is that you are able to install their application on your computer which I think is extremely handy in most cases.
While I know that if offers the most user friendly UI for traders, tradingview can be unresponsive at times, especially when you have a lot of objects (e.g., ray lines, annotations) on your charts, which can be annoying