Those are all generic and less than memorable names anyhow. You can also get additional names to help you track your marketing investments. When you try out a new place to advertise your listings, for example, use a different domain name. You could just use a unique web page within your existing domain for the same purpose, but an entirely new domain has the added benefit of being unrecognizable. At least until they get to your site.
People are familiar with .NET domains.
While .NET is an acknowledged clear second choice to .COM, it is still pretty well known, and has the perception of being mainstream. The others create the opposite impression. Don't worry about getting another web site name just for search engines . Some people get names stuffed with key words, separated by dashes, just for this purpose. Names like this are just awful for marketing purposes.