Things I liked: Simple and straightforward to use. Install the battery and sky shields, turn it on and get readings for up to 9 strings of 99 shots.
Things I would have changed: Nothing so far other than perhaps a storage case. I am using the box and slip case for storage at this time but not sure how they will hold up over time.
What others should know: I'm new to pcp airgunning and while I have done a lot of reading, it is not the same as viewing the empirical evidence. Specifically, how different various pellets shoot.
Things I liked: Works as it should. Simple to use just so long as you prevent/hold the first pellet so it does not fall out. Contrary to some reading indicating that modifications had to be made to hold the Polymag Predator pellets, they worked fine in the magazines I received.
Things I would have changed: They are plastic. Not sure yet if this is a problem and only time will tell as to how durable they are. In addition, I have only used them in a very controlled environment. I am not sure how adversely they could be impacted when subject to dirt or being dropped out in the field. It might be nice to have a small, molded protective sleeve to carry them in.
What others should know: It's nice to have spares
Things I liked: Single shot capability is sweet.
Things I would have changed: Price seems excessive for this small piece of plastic
What others should know: Need to watch that the pellet is oriented properly. I found the pellets I was using wanted to face the wrong way as they dropped into the groove. It helped to keep my finger on the pellet as I slid it down to the breech.