I have the 700 lumen version. Works well, puts out lots of light. The button is a bit hard to press. The charging port cover is rubbery and a bit difficult to close. A bit of silicone grease helps. Run times are as advertised.

This site shows a bunch of beam shot pix including a number of Expilion lights above and below the 750. This should give you an idea...

http://www.modernbike.com/guide.asp?...singleshotplus