Have you ever felt the full effect of being on the first page of Google and Bing for competitive money keywords? First position seo is la seo, this is what we do and yes course everything In Los Angeles is competitive but so are we. Our linking power and marketing strategies is why we put ourselves and our clients at the top of the major search engines, if you're spending money on ad words of Pay per click that's fine it's your money spend it however you want to, ad words and pay per click is instant gratification not financially other than being a drain but to the website/business owner they see their name there and that's enough for then. If you tie in analytics into your website you'll soon learn that not much business comes from there. If you're already a established company that has a budget of 10-30k a month to spend on marketing doing la seo that's fine ad words isn't a bad idea once you are at that point.
Until then natural/organic listings is going to be your bread and butt common sense relative keywords for your business is what is going to drive the customers towards your website and make the phone ring and orders fly in, this is a no brainer ask yourself this do you click on ad words when looking up information or shopping for something online? Most people in the world don't so make first position seo your la seo company.