I don't have the goblin, but I do have the Zephyrus. I also have the Lemo 2, and I had a Subtank Mini, Orchid v4, and an Arctic tank.
Out of those, I love the Zephyrus the most. It's a bit of a ..... to build on as the screws are TINY, but the machining is fantastic, the top-fill works wonderfully, the juice wells are deep and wide enough to let me chain vape at 60W without a dry hit (on parallel 26ga 8 wrap coils - these things are NOT small), and, assuming you're okay with your wicking, it doesn't leak either.
The Zephyrus is hands-down the single best RTA I've come across, but I do have high hopes for the Cthulhu V2 when it releases.
Hope that sheds some light on your situation; I don't have any experience with the Goblin but my Zephyrus is a daily driver and the only tank I still use regularly.