Those are really nice ! I've used them (on a friend's "real race car!!!!") and it was good. The bleed valve - very handy. Gotta get one....NMRJock said:http://racerpartswholesale.com/tirega.htm
I have the "Ultimate Tire Gauge" and I've had it for some time now. I see they have an 'improved' version too. What you want is an accurate gauge with a bleed valve. That way you can run the pressure up to a bit higher than what you want and bleed out the extra. Very quick and easy.
I don't like digital gauges and I don't really see the hold valve as a value.