Had I not own 2 very fast and accurate digital instant thermometers, I would definitely get one of the thermapen models.
I don't know how but I lucked out a few years ago and found a thermometer at one of those discount stores that sells surplus merchandise.
I got one. tested it at home. The first one was accurate to .2-.3 F You could check body temp with that.
Then quickly went out and get a second unit , just in case.
I paid a grand total of 4.99.....