Good quality. Seat clamp is difficult to get tightened in position want. This design is used by many. Just not the easiest.

Lightweight durable and it looks and feels grea

This one is good! I have it on my spz epic and works great. The thing I would recommend is to get a Loctite applied because the screws tend to get loose.

Terrible quality, mold is paper thin, and lots of air pockets that were simply filled with resin. I'm a small guy and would not trust this seatpost not to break. Item is being returned.

I posted two questions that no one answered. First was, how do you adjust saddle tilt? Answer: It has two tightening/adjustment screws that tighten the clamp to your seat rails. Loosen the front and tighten the back will raise the nose of the saddle, reverse to drop the nose. Second question was, how do you tighten the forward screw? It is an hex-type as is the rear. However, the front screw's head is UP, pointed at the bottom of the saddle. I use a saddle with a relief cutout so it is no issue. I just tighten from the top of the saddle. For a solid saddle, I cannot fathom how you would tighten the screw. Depending on the saddle, you maybe, MAYBE could reach the short end of an L-shaped hex key under there. That's why I gave it only 4 stars. So before buying, consider your saddle configuration and whether you could reach between your saddle rails and the bottom of your saddle with a hex key to tighten.
Otherwise, it is lightweight and seems well made. I didn't weigh the differences but I saved a few ounces over my old steel seat post.