For short term trades, I don't look if a coin is PoS or PoW, I just look at the things I feel newbie investors will look at when they come in [by the millions]. Things like name, [cheap] price, logo design, maybe active devs and a good reputation and other simple things like that.
So if the coins I'm buying (for a flip) aren't PoS then it's just a coincidence.
Longer term, there's no way I'd ever buy and hold any coin which is not PoW AND a coin secured with massive hash power, like iXcoin. The reason is that's the single best way to secure a coin for mass, Global adoption.
PoS security is POS...pun intended, and without an ultra secure network your coin is DOA, good only for short term trading.
So far PoS coins have certainly proven to be secure. A PoW coins is basically an arms race, to consume the most amount of energy.
There are good technical papers written on this and PoW is easily the most secure choice.
We're talking about global transactions here with anyone trying to crash your network. That's where PoW gets the job done and everything else is simply another gimmick.
Call it what you may, but my money lies on a PoS coin taking over BTC and any PoW coin within 2 years. It is not just the fact that a PoW waste millions in electricity a year, but certainly faster transaction times and other features coming out of PoS coins are far superior if they stand the test of time.
Read Satoshi's papers: Bitcoin [ixcoin, etc.] will have instant transaction times. This faster block time is a gimmick which leads to an unstable coin.
I'm no techie at all and I saw through this faster coin nonsense last year. And if the people want PoS, do you think it would take more than about 5 seconds for Bitcoin or iXcoin to add some of that inflation to their coin?
So how then will a PoS coin kill Bitcoin? It's absurd. No Scrypt coin or X11, or any of that other joke new algos will ever beat Bitcoin in affordable speed and security.
I'm shocked that it's been so long and all these "expert" devs still can't figure out that Sha256 is the future.
It's a good thing, it keeps millions of competing miners away from the real coins which will be the future. I actually think LTC and all its clones were done intentionally to mislead, confuse and keep the masses chasing hopeless turds while the real coins were being mined and hoarded by those who understand what's going on.
So unless you can find a coin which had a lot more than PoS as its [copy and paste] competitive advantage then I'm sorry to say, you have not found the next Bitcoin.
And don't worry, Bitcoin will not have 21 million coins forever. That's another lie to bring in the sheep. There's gonna be massive inflation of whichever coin wins, AFTER the sheep are brought in, past the point of no return.
Bait - Switch - Dilute.
It's gonna be a rerun of that old classic from 1935.