I bought the Topeak JoeBlow Pro X Floor Pump as a replacement to a decade old floor pump. The Topeak JoeBlow Pro X Floor Pump is a superior floor pump that I would highly recommend. I really like that the pressure gauge is positioned higher up on the unit to clearly see the pressure read out. The stance of the base is solid and does not rock in any way, metal base is flat. I also like the fact that the extension tube can be used for short or long scenarios, I will often pump my tires up while my bike is still mounted on the hitch rack on the back of my vehicles. Lastly, the head unit that attaches to the bike tire valve is great. You press it on to and it secures and it holds and locks with no leakage.
I have a couple of things to share after using this pump 3-4 times a week for almost a year. The biggest learning I had was to pump a tire to pressure and then close the tank/chamber valve before disconnecting the pump head from the valve stem. The disconnect and sealing of the Presta valve is fairly instantaneous instead of leaking off. Plus, there is less pumping to get to pressure for the next tire. Topeak should add this to user instructions for less savvy people like me. I have left the reserve chamber at pressure for multiple days without significant leakage and dropping in pressure. Its pressure gauge is easy to read and its accuracy matches my Topeak expensive digital pressure gauge. The pump head also fits Shrader valves nicely and without having to disassemble and reassemble the pump head like some other pump heads. The build quality is excellent. I can�t think of anything I would change on it. I hope it lasts as long as the 25 year old and still going Avenir pump I gave to my son.
I bought this pump for the larger gauge and assumed that it would be good quality. The pump is lightweight, compact, and pumps well. As a road bike rider, the larger, non-linear gauge is of limited value (except for the larger size) as the more detailed pressure reading stops after 30 psi. Regarding the head, I hate it. My other pump has a head where the lock lever is mounted to the side and works great. The way the Silca head is designed I find that I am always pinching my fingers when I snap the lever to release. Maybe it's just me, but I couldn't get use to it. Finally I broke down and bought the Silca Hiro V.2 side lever head. This combination works great, but the pump/Hiro head is way too much $$. I could only recommend buying the pump/Hiro head on sale which I did.
I've used this pump twice on my road bike and I was impressed at how quickly I was able to get my tires to 80-90 psi. I don't know if this makes any difference, but I was inflating a 'Slime' inner tube and I didn't have any problems. I really liked how you can screw the pump onto the end of the presta valve - maybe all pumps offer that feature and I wasn't aware of it, but this was a real difference maker for me. Very light, easy to get it on/off the bike - I'm a fan.