Look on eBay for some 303 532nm lasers. They can be had for ~$8.00 and put out ~80 mW of power. It is pretty bright. You can see the beam in dimly lit rooms quite easily. For that price, you can pick up a few from different sellers and see which you like the best. They run on a single 18650 Li-ion battery.
Don't believe they are of better quality. Iv'e seen member Alien Laser post a thread where he runs a 532nm 303 for 2 hours straight with no issue.
I think they are metered and binned. Knowing that you get the stated output is what makes it a good choice
Yes Idrago, considering the extra output can be 20mw or more of IR, I would go for 2 or more of Paul's links..
Your obviously going to get another laser or two and extra battery's and charger's for less the price of Sanwu. "This isn't a knock on Sanwu"
This has been bought up on the forum plenty and everyone seems to agree.
My experience with these lasers is it is more like 20% IR, but who cares? It isn't like the IR is going to follow a different path than the green light and hurt you. The only difference I see in getting a Sanwu over the links I gave you is price. You can pay more than double for the same thing, or not.