Pros: - Works right out of the box (well, I had to attach a quick connector). - I like the valve liner - a huge improvement over my old collapsible liner. Does not flow, easy to turn on and off - easy to adjust - deflates easily - feels good in the hand when working Cons: - the round head wobbles a bit. no problem, just doesn't really feel solid (the rest of the device feels solid!) - LED lights dim a bit aggressively. - Resolution as low as 0.5psi. This is probably fairer than 0.1 resolution systems, which can't measure as accurately, but I'd still like to know if I'm closer to my target pressure. It seems to take a few seconds of inactivity to set the pressure. read. This applies both after inflation and after deflation. Give it (my guess) three seconds before you pull the trigger again. You might be able to go faster if you're far away, but as you get closer to the print you want, be patient.