Yeah, Amondotech has pretty good prices. Ebay is a good place to find 'em, too. Here's another 5w alternative to Nuwai:
http://cgi.ebay.com/New-5-watt-Luxeon-LED-Flashlight-Surefire-BRIGHT-BK_W0QQitemZ8760803469QQcategoryZ106987QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
It's a Likki 5w. The seller is also a CPF member. I just got one from him for my dad, and I very pleased with it. It is exactly what I wanted for him. I actually got him a Premierlight 5w Tactical, but I didn't give it to him because it wasn't as bright as I wanted it. The Likki appears to be of the same brightness as my Surefire L4. It might even be brighter, but it's so close that it's hard to tell. My L4 is a pretty bright one, BTW. The beam quality is excellent, too. It's not quite as smooth as my L4, but it's better than my Nuwai 5w (the 3-cell model), which is interesting considering they have a similar smooth reflector. It's about the same size as my L4, too, just a little fatter, but about the same length. My 3-cell Nuwai, BTW, is also similar in brightness to the other two I mentioned. A couple good things about the Nuwai 3-cell model is that it's built like a tank (no kidding) and it runs great on two protected 17500's. In fact, it appears to hold full brightness much longer with the rechargeables.
The TM-301X-5 (/3) is a pretty nice light, BTW. Somebody here is selling a Ledwave Ombu, which is the same light as the TM-301X-5.