-
I really like the second graphic... emphasises the 'S' and that it's a lightbulb. Clean and simple... but I'm not convinced about the font on the first graphic.
Maybe experiment with some wider fonts?
before feedback
-
1
Font - try another
helvetica?
-
2
Font - try another
helvetica?
-
3
kerning
tighten it up
before feedback
-
1
kerning
tighten it up

S looks like a light bulb over head when uve got an idea! and its a great idea.