Which according to you is the best POS coin for staking?
IMO,
ZEIT if you keep 1 million coins per block it will stake very soon after the 20 days are up.
Plus our block time is less than 1 minute, so we have ~2880 times per day you can stake, not like some other coins where you have to wait 3 or 6 months before you finally stake.
Plus our reward rate is currently at 15% per year. Our rate drops to 5% in 2017 , so lower supply will cause a natural price increase per coin.
We are on Multiple exchanges so plenty of places to trade.
ZEIT been around since February 2014 , and will still be around in Februrary 2100 .
http://coinmarketcap.com/currencies/zeitcoin/