Ripple is great for fast transactions, but I don't see the long term case for increasing value since there are many potential alternatives. And people don't really care what backend technology get's their transaction go through.
Faster than bitcoin, but bitcoin will figure that out. Will be really dependent on building partnerships and get real world use. Read something about a potential collaboration with Amazon, but haven't heard anything about that lately.
Monero is what crypto currency should be; untraceable, fast and vibrant community. Of course great for criminals, bbut I bbelieve more and more people are starting to getting serious about their privacy as well. I'm bull :D