Hello! Your logo #3 is the one we prefer so far, the idea is pretty good and the shape of the city is very nice. However, the font could be lighter and straighter, and we'd like to see how it could render with green instead of that orange. Keep up the good work.
Hi, here is #184 my new revision for my current design. I put some "connection" element to the symbol.
The symbol is perfect to use as stand alone without your company name, because it really unique and memorable, you can see in my entry #185. In my opinion you need this aspect when creating a logo for your company, because there will be a moment where you have to use your logo in a small size but still make the audience recognize it as your brand.
And in #186 you can see the symbol as an icon. This is an example for what you can do if you have a symbol in your logo. People would easily recognize that icon as mysmartcity.ch