It depends on what you are using it for. For inside your own home, 80 lumens is plenty. I use mine for that, but also for clearing houses. For inside other places, I like all the light I can get. The difference is you know where everything is in your own place. When your clearing a home or business you've never been in before, you better be able to see everything possible. That said, the TLR-1 is still a killer deal.Yah, the only real reason I included the SSL-1 is that it is the only one I've seen in person. Haven't seen it in a dark room, but they had it on display attached to a XD-9. It looked, dare I say, sexy! It was also easy to manipulate on/off. But its only 80 lumens.
The other two I haven't seen in person, but they are both higher in lumens as you had indicated. Having no idea of what 80 lumens translates to, I am going by the bigger is better philosophy and leaning towards one of the others since they are about 75% brighter. The TRL-1 is $90 while the XTI is $130.
So by process of elimination, I am leaning towards the TRL-1. Unless the XTI is far superior? I wouldn't mind spending the extra if the XTI is far and away better than the TRL-1.