Accurate Digital Tire Pressure Gauge

Does anybody have any recommendations for an ACCURATE digital tire pressure guage? I have (had, actually) an "Accutire" unit, but it really sucked. I compared it to a Moroso 0-15 psi gauge one day at the track, the Accutire said 16 psi, the Moroso said 11 psi. 5 psi is a big difference when the tires in question are slicks.

So... Who's got what?