I own a number of Habistat T-stats, once upon a time I lived in Europe. Mine are "Dimming Thermostats" and is why I refer to them as such.
The one Herpstat I own came much later and I use it to maintain the nile monitors enclosure temps. I spoke out of habit and did not consider they were refered to by different names in different countries, even though I know this.
I employ mostly Ranco ETC 111000-000 thermostats on the non light producing heat sources I use, in my opinion they are a great value and super easy to work with. I believe they may cost a bit more than some of the Herp related thermostats but I've grown to like and trust them.
Maurice Pudlo