Paid will get you to the top results instantly depending on your budget but can continue to increase overtime. Once you stop paying for your ads, you will no longer be listed in the results without organic SEO. There should be a good mixture between paid and organic search rankings that will keep you in front of your target audience. If you build a solid organic SEO strategy, your building a foundation that can drive much more traffic in the future. You also won’t be paying for each click to your website if they are visiting organically.