im sorry to say it but after a big study between CLOAK and RZR. My money is on CLOAK just compare their current work and whitepapers. CLOAK already has their p2p system in place and the OneMarket will also become a reality. This is a new multi million $ industry and i compare CLOAK to BTC as thats how much the model threats to takeover it given it recieves the publicity
But CLOAK is pretty much like every other attempt at anon, and so it doesn't really work, like dark, and all the others. Razor is finally the right direction for the anonymity trend and one that actually works (a coin that has Tor in-built and not as a patch to add to any coin).
It is what a true alternative complementary currency to BTC (what darkcoin tried to be failed because of his technical problems and flawed design) needs to have in order to survive long term.
I'm holding because I believe in this project and because the coin is what cryptocurrencies need right now (finally done right), and the devs are clearly legit and hard working. But I gotta admit that in the altcoin world (where there is no such thing as a sure thing) seeing that price drop is still very nerve wracking and depressing.
Please release new info soon (especially the replacement for mixers which could be huge), I know you guys are working hard so show us the results of your work.