cool WP lovers I have a custom build WP theme that does not

Hi cool WP lovers

I have a custom build WP theme that does not come with a ton of shortcodes.
But I need to create some pages and posts with tapped content, galleries and the like.

So I was looking for a Shortcode plugin - but my God there are many. Some free, some paid.

Anyone got some recommendations?
What's the best?

Also I read an article not long ago (think it was a post on themeforest.net) that we should avoid shortcodes built into the theme - as your content might last longer than your current theme - and in one year you do not want to go through a couple of hundred posts with shortcodes that only worked in your old theme.