SYNX (Syndicate) is a cute little altcoin i bought in September 2017, at around 0.1$ / SYNX. I was in my first crypto-steps, and was looking for some "set and forget" coin with good ROI.
So, i built 2 SYNX masternodes ( 5000 coins each ), and after a few weeks, while the number of masternodes grew sharply, i decided to leave one masternode, and the other 5000 will be used for staking.

SYNX gives the same number of coins for every reward ( 5 SYNX ) , either masternode or staking. I started November 2017 with one masternode, and 5000 coins used for staking. Here are the rewards i received for the whole month.

Masternode

The masternode produced 82 rewards throughout November, for a total of 410 coins. At current SYNX rate, that's more or less 400$/month.

Staking

Throughout November i received 70 staking rewards, for a total of 350 coins. At the time, Masternodes were therefore more profitable indeed.

Still, in the second half of November the number of daily staking rewards increased, while the number of masternodes rewards decreased, due to the constant increase of network masternodes. Therefore, in december i broke the masternode and started staking everything, which lead to better results - 920 coins throughout December just by staking.

Conclusion

Lately, staking is more profitable than masternode for SYNX, and the stable rewards, with the increase of the coin price, provides a nice profit of 900-950$ monthly at current market rate, which is unbelievable, since my investment was 1000$ in September.

If you're interested in this coin, you can find them here http://syndicateltd.net/ , apart from the usual BCT Ann thread,