E1L has a square beam, e1B has a round beam :naughty:
That's my comparison LOL
Sorry I couldn't resist, the E series addict thread in General discussion has great info and is a great place to ask for a beamshot shoot out.
The E1B has two modes and a beautiful round and tight hotspot. I don't know which generation of E1B I have as I bought just the head in the marketplace