Thermometers are a huge bug-a-boo. If there were a good one to recommend I would tell you there are only cheap and good. Good sadly are hugely expensive. You actually have a very good on on the way the herpstat is about the best for the money. the fact it is a thermostat is a bonus. The issue is most digital ones are 2º+/- of accurate some are 4ºF +/- the ones that are spec'd at closer (1º+/- or better) and are certified (traceable) are often more (much) that the cost of a herpstat (0.9ºF +/-) I usually suggest buying the cheap ones and a number and averaging them it is scary how different they can be. I suggest 5 you can sort of get away with three but 10+ make the average work better. I usually get these
http://www.ebay.ca/itm/Mini-Aquarium...ht_2371wt_1165
IR guns are great tools however they too are about the same accuracy. They are super useful but I would rely on an accurate thermometer and use the gun and a quick check tool. One does not really replace the other.
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