(Click on chart to enlarge)
A few quick observations:
1) XXV is a product that is "supposed" to act as an inverse of VXX. It seems to do a horrible job of that. Instead it has almost exactly matched SPX performance. I can't imagine ever wanting to trade something that matches SPX performance, but carries greater risk. XXV is useless.
2) VXX has been a poor long-term performer. (I discuss reasons in the video.) TVIX will likely suffer long-term as well. If you are buying for a short-term trade, then TVIX looks like a decent high-powered alternative to VXX.
3) XIV appears to be a nice alternative to a short VXX or a long XXV position.
More detailed insights are in the video. If you would like to view it, you can gain access by signing up for a free 1-week trial subscription. (Then check out the educational videos section of the members site.)
Also, for a more complete list of VIX-based ETFs and some great information, I’d recommend visiting Bill Luby’s VIX and More blog.