You need to be SUPER careful when looking into a masternode. Yes, some have been massively successful, however the majority of them seem to have masternodes just for the sake of attracting masternode buyers. Many of these masternode coins have masternodes just because they can, they don't serve a real purpose.

The bad part about masternodes is that if the coin isn't adopted, there will be a small group which hold a massive amount of coins. If masternode holders keep dumping their coins and there isn't enough buyers, the price will decline, scaring away other potential buyers.