Just to play devil's advocate, its not all about technical specs and microns (whatever the hell microns are!) when assessing thermal.
Some of us are pretty basic thermal users - its purely to spot a heat source that then requires investigation with the bins. That said I my basic pulsar has alerted me to foxes and deer at up to 3/4 of a mile in perfect conditions. I don't use zoom, focus or any of the other settings. It has lasted for a two years, but I am concerned that it may not last forever. Everything feels plasticky and cheap from the battery compartment, charging socket and the rubber buttons. The battery life and battery health (maintaining charge once charged but not used) is poor.
I have not used the high end thermals from the German brands, but I will definitely look for something that is built better for my next one.