The LT-1 isn't a Luxeon, thus can't be compared "1 on 1" to a Luxeon. It's a 3mm LED. I just received mine today.
While I'm not a reviewer...I'll throw out a few words.
This little baby certainly breathes life back into a AAA MiniMag! It of course is a simple "drop-in" replacement for the standard MiniMag bulb, giving you all the benefits of a LED instead of that little sickly yellow beam that's "standard" in a MiniMag.
It also runs off of 1.5 volts. I tried it in a MiniMiniMag as well.
Though it keeps the focusing ability of the MiniMag...my primary use of this little replacement will be "in the candle mode" with the AAA MiniMag and the MiniMiniMag. Longer runtimes during power outages using less battery energy, while providing a "cleaner color light" than the standard "yellow" bulb...that's what I'm talkin' bout!