Cmon guys. He was definitely asking about staking coins with high interest (100% and more)....(NXT is not one of them)
Well you can have locked wallet and stake. (PC must be on all the time)
EDIT: Do not leave your money in exchange....never
Let me quote myself then:
Hobonickels has inflation control and great implementation of the distribution, coin control, multi-wallet support, stake splitting, etc. It also has one of the most talented developers around. It is a great coin.
NXT is another great POS coin, but stake comes from the transaction fees of others there. You can also buy valuable assets with dividends or even hedge at the NXT asset exchange.
Hybrid coins (POW+POS) have some advantages over pure POS in mining costs, because price moves around production costs as Satoshi said.