Hey all, this might be a breach of etiquette. If it is, please let me know. I did a long post reviewing the Gemini Titan here.
I'll summarize what I found. Basically, it's a nice light. Solidly built and easy to switch from mode to mode. I consistently saw run times very close to the advertised 4 hours on high Gemini claims (3hr 47 and 3hrs 58 minutes on high and total runtimes over 4 hrs).
One thing I noted was the time between the LED switching from Orange to Red was very brief (under a minute). Other than that, the light was very impressive.
I won't go everything here, hope the summary helps.