In fairness to Europe, the financial stability of the EU really depends on which part of it you're looking at. Some of the nations have balanced budgets and are pretty stable -- but that's also because they also haven't fully tangled their own economy into the greater EU economy. The European financial issue is infinitely more complex than which economic models individual nations favor. The Nordic countries probably favor democratic socialism the most, and they have traditionally run budget surpluses on at least a semi-frequent basis. 
 
Of course, I do heavily warn Berners that the Nordic countries also have their economies set up in a way that's ultimately different from Bernie's various plans. They have a bunch of interdependent policies that create stability. They don't, for example, have a legal minimum wage. Their "minimum wage," which does sit around $20/hr, is actually negotiated by a huge network of labor unions. About half the population is a member of a labor union, and they go on to negotiate deals for the entire population -- not just their own members. Simply mandating a minimum wage without labor negotiations could genuinely result in a ton of layoffs around the country, because there's nothing to stop companies from doing so.
 
Which is frankly what happened after Obamacare was passed (at least where I worked). Once that passed, my old company immediately axe'd almost every healthcare plan they had and forced everyone to buy more expensive plans via the marketplace. Because they were within their legal right to do so, and large companies will almost always try to cut costs to acquire more profit.
 
They also export a ton of resources, which gives their overall economy an edge concerning their budget. In contrast, the American economy imports far more than it exports, which is a different scenario. It's also why Drumpf can't guarantee anyone that trade will suddenly improve under his watch. America gets shafted on trade deals because we barely export anything anyone wants (few people want our agricultural products because they're considered subpar quality), and we import all our shit from east Asia because that's where we outsourced all our labor jobs. Not because we don't "negotiate properly."
 
I also speak from personal experience when I say that your average Swede, if handed a giant pile of money, will not know what to do with it. "Oh, I should probably put this in the bank," is going to be their likely response. And then they will keep it there. Nords genuinely don't seek out a shit-ton of wealth. Which is why their high-tax, robust-welfare state works fairly well. Americans are... different. I honestly don't know if a Nordic economic model can successfully be applied to American society.
 
I support the idea, of course, and I hate all the alternatives, but I don't know if it'll work in the long run. 
 
 
 
 
 
Otherwise, yeah. Cruz looks like a holier-than-thou evil goblin, Rubio is Jeb Bush's establishment understudy who has suddenly been put on the main stage, Kasich sounds halfway sensible but is getting no traction (likely because he sounds sensible), and then there's Cheeto-face. A lot of young Dems don't like Hillary for all the reasons you listed, which is made even worse by how transparently corrupt the DNC is. 
 
If there's one thing both sides can agree on, it's that we all hate our party leadership.