My favorite, go-to compact weapon light. - Viridian Weapon Technologies X5L-RS Gen 3 LED Universal Green Laser Sight w/Weapon Light

I've purchased several of these over the last few years, since Viridian switched to the third generation and I must say that this is my favorite compact weapon light/laser combo that's currently on the market.

This has been a great light for me and I would say it's output is similar to a Crimson Trace CMR-301. Both are suitable indoors and within short-medium ranges, with more of a focus on flood rather than having a defined hotspot. It's perfect for indoors; outdoors, I'd say you get about 25-50 yards of usable light, depending on lighting conditions.

If I did have any complaint, it would be that the tape switch and battery are both proprietary.
I don't care so much about the battery as I can just buy more and I like the concept of having an easily detachable battery, but if Viridian ever decided to stop making them, you're pretty much screwed.
My biggest complaint would be that the tape switch is proprietary. I've found a way around it, but, it would've been nice if they used a Crane laser plug instead of the system they're currently using. For one, it adds a lot of bulk for a compact light. Two, it would have been nice if you could use the light with other aftermarket switches. Particularly, if you run more than one device. Not necessary, but, I'm sure it's something that people consider when looking for weapon lights. More inter-compatibility means more sales. Also, doesn't help that the switch is around 2-3 inches long and can take up valuable real estate on a smaller platform.

But, overall, I think it's a great little package for the money, if you need a light/laser for short-medium ranges. If you need something a little more powerful, get the Surefire X400U.
Just remember to peel the plastic protector off of the battery terminals after you charge it so that it actually works.