I want to optimization my site for search engines. And I searched two way to do this.

1 WAY

To use angular 2 universal for rendering site on server side. I guess this a little difficult and I haven't learnt this yet.

2 WAY

Use https://prerender.io/. I guess this very simple.

So my question. What to use for SEO that it will be more Friendly for search engines and simple? Is there any reason to use angular universal or https://prerender.io/ will be enough?

May be sorry for incorrect question but I'm new in this and I want to pick more great way.