I use the regular inkbird itc 306T for my emergency / travel reptile bins and for my female leopard gecko. They are were cheap enough to get several, which is a plus. My gecko's is for a small 8.5 x 6.75 UTH under her lay-box when she is in egg mode. The temperature isn't as constant or controlled as the proportional thermostats but for a few weeks each year to keep a single hide warm it is fine. it seems to vary by about 2-3*F before it turns off and back on - which is not terrible.
for my regular heat I like the herpstat proportional ones
I've never tried the wifi ones, but if you live in an area where the internet going in and out is frequent, I'd worry about inconsistency esp in the winter - that being said, power can go out too