Both tools are kind of all in one and portable. Price is not as much as other, perhaps more exact (or at least more established) setups. Both are versatile within their limits. Easy to use once I read the instructions with the gauge. I found the gauge less subject to error than the "tuning fork" and easier to read than the "probes" with less tendency to bend. Robert indicates that a light touch is all that is necessary. Some of us did a comparison at the last Vintagers and came out liking these products for general duty. Besides, the gauge is fun.