Most customizable out of all the dials I've tried, so I definitely recommend it overall. I would have given it 5 stars, but I had to take 2 away because there are several issues that could be improved.
1) I don't like that I have to make an extra click to access Site Groups. I wish they were on top of the page like tabs in a browser. It's very impractical if you have multiple groups and have to access the sidebar every time you want to switch.
2) It's great that I can quickly add a site with a small icon in the search bar, but it would be better if it remembered I've already added it. Clicking the icon again and adding the website will result in two identical shortcuts on the dial. It should work as an editable icon, so that when I click it the second time, I would be able to edit information of the shortcut (change photo or name from there instead of having to do it on the main dial page). Choosing the folder to save it to would also be practical.
3) Setting images can be tedious; I work with a trackpad on a laptop and holding it for a longer time is really uncomfortable. This goes for deleting groups too. Also, sometimes when I try to add an image from a link it says "wrong file".
4) This isn't a problem as such, but for personal preference I would like a less visible shadow around the tile edges, it would make it look cleaner.

Looks good, but can't use as there's a limit to 100px dials and that's too big: it doesn't give me enough dials. Also the extension calls itself swift, but then even button presses in the menu must unusally be held for a longer time. Additionally, unlike other similar extensions, it didn't allow dials to be made that didn't have a strict internet address. I want for example a dial to go to my Ant Downloader extension settings, but can't.