Works at speed as in I dont give my speed any thought during the process.
I find myself airing up in the dark frequently with weak eyes so my go to is a Milton illuminated digital.
I recently retried the knock off version of the ARB EZ deflator. Unlike your test I thought the quality was much lower and seemed more sensitive to the way it grabbed and held the valve core. I ended up sending it back, after reading your post I may have picked a bad one.
Yeah the EZ deflator only goes up to 60psi and the cheaper one goes up to 75psi,
I prefer the ARB Low Pressure Gauge ARB508 0 to 50psi to the ARB Red Gauge P/N ARB506 0 to 75psi, I found the Red gauges Hose way too stiff even more so when it's cold, The Low pressure gauge has much bigger gaps between each psi which makes it easier to set it to 1/4, 1/2 and 3/4psi and it is the cheapest one they make at round $20.00/£15.00 and with these Old eyes it is easier to read, I also bought the Longacre Magnum 3 and a 1/2" 0 to 15psi that has 1/4psi markers and it accurate to 1/4psi and the other Longacre gauge I bought was the Longacre Pro 4 and a 1/4" 0 to 60psi which is also Accurate to 1/4psi and has 1/4psi readout, The 3-1/2" was 6.5 times the price of the ARB Low pressure gauge and the 4-1/2" gauge was more than 12 times the cost of the ARB low pressure gauge,
Knowing what I know now, Longacre are beautiful US MADE Gauges and I just had to have them LOL but in all honesty if you run street pressures around 40psi and below then the ARB508 Low Pressure gauge is the Ultimate Gauge and although it is quite large it is very easy to read, The reason I say about having pressures below 40psi is because you don't want to RED LINE the needle as this could damage the Gauge in the long run.
The Longacre Magnum 3-1/2" gauges come in 0 to 15 has 1/4psi accuracy and 1/4psi readout, 0 to 30 has 1/4 readout , 0 to 40 1/2psi readout and 0 to 60psi with 1/2psi readout. and All of them are Glow in the Dark, the Magnum series offer the best bang for the Buck due to their easily to read Dials and their Accuracy and come in an Alloy Case, from a price point of view they are the most any one would need to spend to get a very high Quality Gauge at around $82.00 where as the 4-1/2" Pro is definitely Over Kill at around $182-200 bucks a pop, Beautiful yes, but it is Huge and actually measures over 5" in width, So not pocket friendly,
The ARB508 is a fraction smaller than the 3-1/2" Longacre Gauges and is the best bang for the buck regardless of the brand,
Hope that helps.
j.