Hudy is definitely the best quality and most accurate on the market and I've had mine for years. I've also used the arrowmax gauges too and those are also very good but just aren't as strong and play free as the hudy gauges are. If you are racing every weekend and getting serious about it I'd invest in the hudy outfit it'll outlast most of the other cheaper solutions out there. By the way the HUDY gauges have caster markings on the gauges so not sure what Henry meant above.