Thank you very much for your replies!
The main reason is the overall look and feel of NodeBB: I really like the UI because it's clean and easy to use. I also kind of get the idea that this community is more active. The other main reason is the home page! I really like the fact that you can customise it and make it more appealing for your users.
Also, I was browsing all the communities using NodeBB just to get an idea of what you can do with it and I found some amazing examples! I can't wait to start using it.
Ok so I keep development my plugins and my theme locally and then when I'm ready I pull whatever I need from the remote instance, makes sense, thank you.
Exactly what I was looking for, thank so much, and thank you for taking the time to putting together I mini-guide, I appreciate it.