The larger issue here is that it's common and expected to have to trademark a logo, so if you're ever going to need to do that a logo made with stock art may be

The larger issue here is that it's common and expected to have to trademark a logo, so if you're ever going to need to do that a logo made with stock art may be problematic. Other than that I'm a big believer in asset stores, stock art, etc. Especially for prototyping.