You made an excellent choice in the TT-2L. It will do everything that you probably NEED to do.
I have been a hunter, fisherman, and outdoorsman all my life. My profession was military.
I hope no one takes what follows wrong.
I am new here and am having a load of fun fooling with and learning about flashlights. I have bought quite a few since I bought my son a Surefire E2e in December 03. I had never seen a light like it, and was WOWed. I had to have one.
Since then I have bought the E2e, E1e, Pelican M6, several TT1L and TT2L, a couple of Arc AAAs, some Sonics, and Ultra Gs, some Dorcy AAA, a TL-2LED, and several I don't remember.
Until Dec 03, I had never seen lights like these, and the best lights I had were Mag C lights. I never liked D cell lights because of the larger barrel.
But, I had never felt the need to have the kinds of lights I now have. I bought cheap lights at Walmarts or wherever, and they did all that I needed to do. I never was in the dark or failed to find my way in the dark because the light was too dim.
I did on some occasions not have a light, and had to travel by moonlight. My foolishness.
In saying all this my point is that this flashlight stuff is a lot of fun, and for some a technical hobby. But I do not have any need for the lights as bright as the PM6 or E2. I do not need to do what LEOs or the troops in Iraq do. They do need such lights, but I don't. They are just fun to look at something in the dark. I will use them very seldom.
The problem with the incandescent lights is that the batteries do not last long enough for all night operations. At 1 to 1.5 hours on a set of batteries they eat too many unless there is a real need for such lights.
The LEDs are the best way to go. They are now more than adequately bright, and provide a much longer battery life.
For that reason I have settled on one of the TTL lights as the most practicable for me. The LED mde is more than adequate for walking the trail in the dark, and the Xenon is available if needed. It is brighter in the xenon mode than any flashlight I used in the past, and I never felt the need for more throw.
I think a small key chain light or similar one such as the Arc, Sonic, Ultra G, are very useful and will always be with you. I find all those about equal in brightness, so the choice boils down to whether you like one or the other based on price, and quality as you perceive it.
It might be that the Surefire L4 is about ideal in battery life, throw, and overall brightness, but I have never even seen one and have no desire to buy one.
I really like my TL-2LED and it would be a good choice as one light for me.
Now again, having said that, have as much fun as you can here. The people are superb, helpful, very intelligent, and the dealers here are without peer. Buy some lights and try them out. It will be enjoyable if you are like the rest of us.
Some like 150 mph cars, which have no good use except to have fun if you can live through it, or to say that you have such a thing.
And as one member said, "It is sad, but some people collect stamps and they don't even use batteries."
Some will disagree with me, but that is my take.
I might add that I have a LOT of things that I don't need but which add to my enjoyment.
Jerry