There are several things I like about this set, but first I'll tell you what I think of the filters.

First is that there are 3 of them to choose from, 4, 6, and 8 point, so that I have the flexibility to make the shot I desire based on the lighting situation. Next is the quality of the mounting. Several screw-filters I've used are difficult to attach resulting cross-threading or sticking. These have well cut threads that are easy to get on and off my lens. Also, and very importantly, is that the filter can be turned after it is attached so that the photographer can adjust the angle of the star points to suit the frame.

I've read that some star filters reduce the quality of the image, but I have yet to see that with these filters. With or without them, the clarity seems to remain the same to my eye. If you have a better eye for this, you may see a difference, but I cannot.

Due to weather issues I have yet to take these out at night for a full test. I've been limited to using my phone flash to see what they do to bright, pinpoint lights, so take this with a grain of salt. With a flashlight in a darkened room (not dark, darkened), the points are refracted into thin rainbows as shown in their picture of the diamond. Truly a beautiful look.

Lastly I'd like to point out the superior case they come in. It looks really good, but the most important part is that each pocket is made with a very nice material similar to my wife's yoga pants. Once folded up, it is held closed with industrial grip hook and loop (think: Velcro). Inside this case, these filters are very well protected.

I highly recommend these.