This is the cousin of the Photo and Copy (Cover) display. This works the same way, but the image can be linked, and the display height is determined by the image or content.
The features gallery is a unique section of your website where you can store special features to be used throughout your website. It's a way to feature simple items like a carousel of logos
The Siders and Carousels display block also includes a couple of other content sliders from your website. If you have added news items to the news section of your website, you can easily add a news block to any landing page.
The features gallery is a unique section of your website where you can store special features to be used throughout your website. It's a way to feature simple items like customer testimonials
Quick text is just that. You need to add a little fine print, a disclaimer, maybe a heading over something. You don't need the full design block, and none of the blocks is exactly what you need.
If you're the sort of person who will sweat the small stuff, spacers and quicktext were created for you. Spacers allow you to add a little wiggle room between elements that look too snug.