I have a ThruNite TN31 XM-L2, Trustfire X6, HD2010, and a Fenix TK70. Honestly, the TK70 poops all over the other ones. The TK70 and the TN31 have the same throw value (130kcd), but the TK70 lights up a much larger area while having the same throw. I just picked up a 2nd used TK70 for $135 shipped from another forum member here. You can get one new off eBay for $190, but I know that’s a lot more than you want to spend.
The Trustfire X6 is a great thrower, but a decent light. I got one off Aliexpress for $78 shipped. It’s definitely a major thrower and it has great heat sinking, however, I have some complaints. The one I got is unbranded, came with a completely borked tail cap rubber gasket (there are 2 so not a huge deal), and it is a reverse clicky switch. My biggest complaint though is that the battery tube is very short. I bought some Panasonic NCR18650B 18650 3400 mAh protected batteries from fasttech.com for it and I couldnt screw down the tail cap. I then tried some Sanyo UR18650FM 18650 2600 mAh protected batteries from fasttech.com and I could screw down the cap, but it caved in the negative contacts on the battery protection circuits. To be fair, the protection circuits that fasttech offers on those batteries are abnormally long, which doesnt help. So if I want to use the light, I generally put in my protected Trustfire flame 18650’s, which I don’t trust to not explode in that light. As Scaru mentioned in another post, this problem could probably be fixed by cutting down the tail cap spring, but it was kind of an off putting problem for me. I’m not sure why Trustfire couldnt add 5mm of extra length to the battery tube…Would it really cost that much? All my complaints aside, the light throws like a mofica, is fairly cheap, is a great candidate for modding to push A LOT more lumens from the stock emitter, and its cool to have a light that has something other than a Cree LED in it (It uses a Luminus SST-90 LED).
I bought my TN31 XM-L2 from another forum member here, JOE, and it is an absolutely fantastic light. He sells them for $145 shipped new and he is a great guy to work with. I really like the user interface of the light. It uses a ring at the top of the body, below the head. You twist the ring to switch between the mode settings. The modes are nicely spaced apart lumen wise and include a standby and strobe feature. The lowest mode is the lowest lumen output of any flashlight I own, which is really nice if you need just enough light to read a map or something where you don’t want to ruin your night vision. The switch on the tail cap is also forward clicky, which I VASTLY prefer to reverse clicky.
The HD2010 from Tmart is a nice light and hard to beat for $30, but I have some reservations about it. It definitely throws nicely for the price, but every time I turn it on, I feel like I am in a James Cameron movie at night. The tint of the emitter is very much on the blue side of the spectrum, or at least mine is. While its really not a concern unless you are shining it at a white wall 10 feet away, the beam is also very non-uniform. Also, there isn’t a very good selection of 26650 batteries out there and not a lot of chargers support them. I would probably spend the extra $7 and get a Fandyfire STL-V6 from fasttech.com so you can use 18650’s. If you go with the HD2010, I would probably get a Protected Trustfire Flame 26650 or King Kong 26650 for it.