QUICK BREAK DOWN:
1) Design: 5/5
2) Installation: 5/5
3) Ease of Use: 5/5
5) Customization: 4.5/5

DETAILS: The Good

I've used many demo installers and 99% of them are over bloated with ads (usually not relating to the theme or theme author). This installer is modest and simple (minimalist design). It also doesn't over-ride and delete posts or pages you already have.

One thing I like really like about Estudio Patagon's themes is they don't really require a bunch of plugins you may never use. I enjoy the 'Table of Contents' style in this theme.

Details: The Bad & Ugly

Estudio Patagon's has modules in some of there other themes that can't be used in their other themes. Take the 'Table of Contents (ToC)' or 'Disable Pagination (DP)' Zento's ToC looks the best out of the rest of their themes. And the DP is also not found on some of their other themes. Many of these modules could easily be added to their other themes to give you/us more options in page design or layout. Other examples is their Wave theme which has a Slider, but they never gave that option or ability to use in their other themes. Its not another plugin & anything that can save me/us money is a plus. So why not add some of these modules to all their themes?

Details: The Great

This doesn't apply to this theme, Zento, itself. but I've also bought Edge, Wave, and Maktub.

Maktub - was missing modules or features found in their other Themes. They offered me a refund of their own volition even before I could submit a request for one.

Wave - Was having issues with the modules (post grid, classic post, etc.) & I mentioned the issue I had wasn't in Edge or Zento's theme. They replied with an update for it so I could disable pagination for those modules.

Edge - Was having issues changing a color on the theme. After bringing it to their attention they again offered me an update so it could be edited via 'Theme Options' & later pushed it as an update for everyone!