I have been fortunate enough to try out many of the popular timecode systems that are about these days and got asked a question on one of my live hangouts about which one I still use as of early 2018.
The answer is:
The Tentacle Sync E
It may seem a bit of a surprise as others have more nifty and fancy features but because I still don't do any live streaming that requires me also to timecode and genlock I haven't found a need for the Timecode Systems Ultra Sync One.
For me it all comes down to the simplicity and easy of the tentacle system. I just jam it twice a day and then with its 30hrs of battery life never run out and because they are well built and don't have anything fragile like a screen don't mind them getting chucked about.
Let me know in the comments what you are using and how it has made a difference to your workflow.