Alrighty so I've said this about a dozen times, but drawing is the easy way to weed out bad ideas as they start. It's quick and dirty.
So the version 3 logo is interesting, it's simple, but had issues. for example, you took the time to custom design out a V and i but just used a font for the rest. if you take the time to design out one part, spend 5 minutes, sketch out an idea of the rest and make more that are in the similar theme. Total time on this sketch was 2 minutes, 37 seconds so you can get forth the time it takes to start to get lettering that is both custom and completely one voice with your logo. When I saw the lettering, first thing that came to mine was Serpentine Typeface merged with an almost block lettering like Agit Prop (without the Russian struggle against the proletariate feel) ... your "i" should have a feel of that angle jutting out from the same base line as the v, with a dot on the top that mimics that size and shape. Now as for the text, the 's' 'a' and 'c' in Visual impact would be the most easy to add a small accent point to the inner tips (thus the Serpentine feel) and the t I think should have a feel of the lower case 'L' with the allusion to the full cross bar by knocking it off on the left side and keeping the kerning clean and solid.
all in all, that is what I see when I see that logo and the style of text that should go with it. will you find that as a font? ... nope. start with a sketch, weed out the weak, design the strong parts, revise as you go.
And jillbeans does some good work, follow her sharpy advice and go with something that is striking in the marker phase. Kudos Jill, kudos.