I also bough the Melon deal, but each has its own place. Flutin Live is great for managing complex chat (I'm looking at you Facebook) when you are doing a product launch or tutorial video though that might detract when you are doing live performances.

You will definitely want to plan for expansion with the Flutin deal as you can exhaust your limits rapidly. Facebook alone can use 3 of your channels if you want to stream to a page, group, and profile simultaneously. Also with TikTok missing, you will probably want to have LOTS of RTMP destinations which is another reason to upgrade. If you honestly never see yourself expanding, you will still probably want to upgrade to Tier 4 anyways so you can avoid the commission on your monetization.

Flutin seems to have some glitches that can be a literal show stopper for some such as refusing to start the stream if it can't find both a camera and microphone. However, in my case just restarting my browser fixed the issue. I have not actually tested this service with an audience, but for my 30 second preview clip everything seems to have posted correctly. You should probably avoid creating live stream events in Facebook directly if you are using Flutin as otherwise the audience joining through the event may not see the stream created by Flutin (though you can in theory use Facebook in RTMP mode, but you will likely lose the comments in that case).