Things I liked: Very portable. Folds up nicely and fits easily on a tripod. It worked flawlessly on a cloudy day (you don't need the diffusers on a cloudy day). I have not yet tried it on a sunny day. It will not work at dusk FYI.
Things I would have changed: Instruction manual wasn't organized well. They should have started with "Basic Operations", instead you have to dig deep into the manual to learn essential things such as how to save data.
What others should know: Works with firearms too! I used it to clock my different 223 loads and I could easily see which load has the most consistent speed.