Just one more thing
Although cryptonote crowd may have some nice cryptography, Dash is a far superior monetary design.
Thats because it uses a commodity based monetary archetype rather than a record keeping one. The difference is that the former lies "unbacked" at the end of the value food-chain, thrives on transparency and can outlast unpredicted technological revolutions (think, metals, minerals, diamonds, oil) whereas the latter is concerned with holding records of ownership that are backed by a commodity (or even debt contracts) somewhere else. (Think bank accounts, equity certificates, bond records, bit gold).
The need for privacy in that archetype arises because there is an explicit contract of ownership that ties a legal entity to an asset and therefore has a legal bearing (as opposed to an anecdotal observation of ownership which doesn’t).
The difference between the two paradigms is huge. To illustrate, take house keys and property deeds. I may walk down the street and observe people take a set of house keys from their pocket and enter properties. I can assume they live there but it doesn’t tell me anything about the names that are on the title deeds for the property.
Thats Bitcoin.
Now imagine I see a different person every day enter the same house. Now I can’t even tell who lives there, and therefore can no longer even make an educated guess at who’s on the title deeds.
Thats Dash.
Now imagine I can no longer even see the street anymore. I just hear a bleep everytime someone enters a house and have to assume that “something significant occured there”.
Thats Cryptonote.
The problem with the last one is that the archetype comes from a trusted party system that uses a record keeping paradigm and where someone else is checking the street on your behalf. For example records of credit backed by a bank. It was even originally designed for them:
http://groups.csail.mit.edu/mac/classes/6.805/articles/money/nsamint/nsamint.htm#2
(See Figure 2: There’s a bank in the loop).
So, by electing a recourse to transparency to impose privacy, you're unconsciously moving the asset one step down the foodchain from a commodity archetype to a record keeping one. "Privacy" becomes the only source of value which is like preferring the safe to the gold. Moreover, you're suddenly massively exposed to competition from other technologies since "keeping stuff hidden" is now your main value proposition and that is not in any way a unique product.
You can see this happening already in the Cryptonote market. They are now falling down the hole that Dash managed to dig itself out of just before it got stuck. That is to target a specific market (which, as I mentioned above, is ok for products but not for money). This further hammers home the nature of cryptonote as a product oriented "tech stock" rather than a monetary oriented asset because it's going to preferentially get used it at the entry and exit points of that market as a subordinate laundering service for "real money" like Bitcoin or dollars.