Below is a list of some of the top advertising companies in Las Vegas based on their reputation and experience:

1. R&R Partners
2. Adlava
3. BRAINTRUST
4. Levy Production Group
5. K2 Analytics
6. Quillin Advertising, Public Relations & Social Media
7. Trosper Communications
8. The Firm Public Relations & Marketing
9. Imagine Communications
10. 87AM

It is important to note that each of these companies may specialize in different areas of advertising, such as digital marketing, social media, or traditional advertising. It is recommended that individuals seeking advertising services do their own research and due diligence to find a company that best suits their needs.