Hmm,
All Proof of Stake coins based on peercoin design, prevents transactions spamming by destroying the transaction fees.
Also most of those coins are fixed rate fees not variable rate fees like many of the PoW coins,
so there is literally no financial incentive to spam a proof of stake network like there is to spam a PoW network where the spamming increases the PoW fees.
PoW is a failed design that leads to an ever increasing input costs to keep the network running, which also means ever increasing fees.
PoW is a evolutionary dead end, no real point to it.
Proof of Stake is the only reliable & cost efficient & energy efficient way to run a global network.
Personal Preference for Proof of Stake Coin is ZEIT , it is energy efficient, Decentralized, and Ultra Low Inflation.
It is a coin for the long run as it can maintain and grow it's value per coin over time.
It turns out better to buy young POS coins to make money on it. Which one would you recommend? I was looking for a branch of a young POS coins on the forum, but I did not find it. Can someone create?
It sound like you are more interested in short term coins, for that just monitor the New Altcoin Announcements here: https://bitcointalk.org/index.php?board=159.0
The only play with other PoS coins with high inflation rates, is try to get in early , make a bunch of free coins with their insanely high interest and then cash out before their price drops or the difficulty gets so high you can't stake anymore.
Sprouts and 808 are prime examples of this , but are already dropping too much in price to be worth it, which is why you never expect a high inflation coin to be worth anything after 3 or 4 months. None of these are long term holds as their price will always drop from year to year except for the random pump and dump.
Get in and get out before the prices collapse with high inflation coins.