Got mine a couple days ago and have played around with the blue one (I’m keeping that one). The blue is a really nice deep darker color with that metallic-texture from the anodizing. The red is entirely too bright…would rather see a high-low with that instead of a high-blinkie…also has odd shadows in the beam which look like bond wires (they’re in the middle so I don’t think they’re artifacts from the edge of the tir). Can’t really see in there to the diodes very well. Seems like a nice 5000-5500 color temp, thankfully not as cold as I feared. 
Charges just fine with a USB-C to USB-C cable from a PD wall wart. Takes about the same charge time with that as it does from a 500mA USB 2.0 port on a computer and I was seeing around 480mA charge rate from both sources. I think I’ll go ahead and mill off the bottom to make it able to tail stand, but I’m also thinking about using a thin neodymium plate magnet now, too. There’s enough meat there to cut a groove and insert the magnet rather than just gluing it over the top (if I can find one the right size).
Now get this. I show it to a friend and he says to his wife, hey wifey, can I see your keys for a minute? And on her keychain was a Fenix E03R. These are the exact same lights - exactly the same other than the housing (the Fenix is one-piece all metal). Same exact UI, appear to be the same emitters as near as can be seen, same optic. Looking at them together they appeared to have the same brightness at all levels as well. The button on hers felt a little softer but she’d used it quite a bit since she got it a year ago.
Looking at the specs online, the Trustfire appears to use a bigger battery (300 vs 200) and claims more lumens. If this is honest then it would appear that Trustfire made it cheaper and better (and with colors!) but again, side by side in person I really couldn’t see a difference. Zeroair reviewed the Fenix and its claimed lumens were pretty accurate other than the peak turn-on in high mode with fast fall-off. It’d be interesting to see what numbers he would get with the Trustfire for comparison (i.e. using the same equipment/technique).
Other than the bright red mode, the two other things that I think would really improve this light are a concave button (divot) for easy feel in the dark, and while I am not a hat-light guy, I actually think that a removable clip would be fantastic on this particular light (for hats, car visors, perhaps clipboards, etc). That and a glass lens over the optic. If the glass and button changes would require more space I think it’d be worth it and perhaps even a slightly larger cell pouch could be used in that process. Good little light, imho.