I'm not getting carried away about it's accuracy, but it is actually twice as accurate as the ones listed on Reptile Basics. The Fluke is rated at 1% so as you stated at 90F it is +/-.9degF. And the ones listed on Reptile Basic are rated at 1deg Celcius or 1.8deg F.
The 412LR is a 12:1 DS and the Fluke is 10:1 so not much difference there.
With shipping from RB the 412LR is about $63 to my location so $60-65 shipped.
The Fluke 62 is $72 shipped thru Amazon.
And the biggest difference is the Fluke 62 comes with a 2 year warranty and the 412LR only comes with a 1 year warranty.
So for approx. $10 more you get a IR gun that is twice as accurate and has a warranty that is twice as long.
The Fluke 62 may not still be available directly thru Fluke, but it is still available thru other sources.
And I completely agree that a very good T-Stat is definitely still a must and more important!