Malkoff
Deerelight
BOG
Are the more reputable brands
ebay
Dealextreme
Kaidomain
At the lower end of the market
Just remember what you pay for is what you get
The Solarforce modules are worth a look too IMHO. Just disregard the bogus Lumen specs. Their brightest modules are probably in the 150-170 Lumen range tops.
You can get them from Lighthound, IMHO its worth your $$$ to get it from a well respected www retailer..