I have bought 4 of them from that seller, 2 and then 2 more, he is a high volume seller and although his rating is not 99 percent all my lights got here in 5-7 days and they are brighter than my 900LM XML-T6 olight that cost 5 times as much, I actually just ordered a couple more because I walk every night and they have a nice long throw with that long reflector.
I also like the sturdy switch, I was building with that slide focus XML-t6 FL and I noticed all of a sudden the led's were not being driven as hard and were not as bright. Now I see that the old units switch will carry my NUBM44 but the new ones burn up in less than 30 seconds, but these MX-900 switches all load test good.
That's why I say get em while there still good because that screw together heat sink from BudgetBeams for the MX-900 is a handy thing, I am going to try a Gball diode with the Gball on it just for kicks and that heat sink is perfect for that.
Here is how I have had to jury rig the old slide body switches after they saved a fraction of a penny making them thinner inside.
These lights stand on their tail real nice too, of course you know safety glasses are a must, but I must say it for anyone reading, never chance your eyesight, please wear the glasses.
Quick link below :beer:
http://www.budgetbeams.com/