The fact is that Dash was not premined and it is not a scam. There was an instamine problem, but it was long time ago and it was sorted and explained. Do your own research and you will find the facts. I actively watch Dash and Monero since 2014 and I have to say that Dash has done much bigger progress than Monero. Anyway we will see in following years which coin will be the real digital cash.
It is true, Dash did make a 'progress' that may seem much more than Monero one. But what is the quality of that 'progress'? I was a holder of Dash called Dashcoin in that far 2014 year. And the main goal of Dashcoin was anonymity. What is the Dash anonymity today? What a fundamental math does support the Dash anonymity? No math. Just unverified new code written by newbies like EVAN DUFFIELD. Note he left the core development and is just mentioned as strategy adviser on the official Dash site.
Actually, Dash team has lost focus on anonymity and start to develop several other branches of spontaneous community requirements, such as master-nodes to implement hybrid PoW/PoS, instant payments and decentralized vote system. So they have spread the focus among various tasks. But Dash has neither fundamental scientific-proven math nor well-done programmatic architecture inside. It is a product made 'on knee' of narrow enthusiasts' group.
Nevertheless, I respect the energy that drives Dash core devs. They have done a lot of work indeed, and it can't be denied. But... If I need the true anonymous payments, I do NEVER use Dash. Only Monero does have the fundamental, scientific-proven math inside. ZCoin has too young algorithm that may contain catastrophic vulnerabilities. Furthermore, apart of that, if you just send money between regular and anonymous addresses in ZCoin, you lost anonymity very fast. This fact was discussed a lot in the net...
What about price, Dash costs more than Monero simply because Dash coin supply is much lower. Furthermore, Dash mining algorithm discourages miners to participate a lot, decreasing mining supply when Dash hashrate rises.
P.S. Also you have to trust (though it is not 100% trust) to Dash master-nodes to send 'anonymous' payments.