I've been using StakeCube for two months. All I have to say is that I am loving it greatly. They have a great community that has been very supportive and gave me a lot of free cryptocurrencies! The exchanges are great, simple, efficient, and easy to use. I've even won a trivia competition! One of their most prominent features is earning interest. Interest in BTC, ETH, DOGE, SCC, and more, as well as staking of masternode coins. In addition, you can host or share masternodes on the website, as well as earn passive income, or buy hashpower in miners. A new webmining feature has also been introduced.
Deposits and withdrawals always work and are quick. Sometimes though, the coin network may be down, so do be careful!
However, masternode slots are always full, and are very hard to access. But on top of this, the positives outweight the cons of StakeCube.
Barely any fees as well, and are extremely affordable.
I recommend this exchange 10/10, and any new masternode enthusiast should definitely check it out.