True 1000 lumen XML is here:
http://elektrolumens.com/EDC-XML/EDC-XML.html
I bought a 1000 lumen rated via ebay and it is close to 800 OTF, but the heat in high mode is concerning.. I would only run the smaller ones in medium mode, the heat is a huge concern unless riding in cool-cold weather. The Elektrolumens uses a solid copper heat sink to help with the heat issues.. Below is a pic of the ELM MCe light rated at 700 lumens, so the XML is tighter and brighter..
If that is not enough power he has a triple xml using 26650 cells at 3000 lumens..
http://www.king-cart.com/cgi-bin/car...ct=Big+Bruiser