What thermostats are you all using? Need help deciding please!

[ReptilesK2]

I really need to upgrade from my $30 thermostat that I bought when I first got into ball pythons 3 months ago.

I'm in the process of building a new rack thats 6 tubs tall by 3 wide.

Need a good reliable thermostat, what thermostats do you guys use?

I would like the price to be in the $100-$150 range, $200 max if needed. I know its not something to go cheap on so I want to pick the right one.

I'm deciding between the Vivarium Electronics, Herpstat 1, & Helix.

Whats the difference between the Viv Elec models (100, 200, 300 etc) Same with the other thermostats.

Is night drop needed? What options are needed for ball pythons? Is there any brands I should stay away from?

Any other brand suggestions are welcome!

BTW, how do I make a poll?

Edit: Nevermind I got it, it was on the next page lol.

Edit: Another question, What is the difference between non-proportional and proportional thermostats?

Edit: Another question, (LOL) Whats grounded mean?