My basement has no HVAC system but I run a dehumidifier at 50% all year. The temperature fluctuates seasonally but not daily. The only wind is my breathing and I hold my breath when taking measurements since I found it affects the readout. The lights in the room used when reloading are overhead LED spotlights. The Dillon came with calibration weights so I am good there. The Dillon seemed accurate without a warm up but I can see the newer ones need it.
Some of the reviewers seem to be knowledgeable and go into it quite deeply. Maybe I am expecting too much. When you adjust for inflation, the $45 Dillon would cost several times as much although a few of the cheaper ones seem to have similar reviews to the more expensive ones. Maybe they are all using the same or similar mechanisms. Even the Hornady m2 at around $170 seems to have a problem with number creep.
