I would go digital not dial, it's matter of precision to me.
Blue or Red line it's all the same it's about the look.
For your use either the intro plus or herpstat 1, the reason I did not say Intro or 1 Basic is that those are missing some safety feature that are worth it.
It's a solid brand worth every penny I have some that are 12 years old now and still working great (only reason I have been replacing them is that I want them all to look the same older models were very different.)
I am old school and I like one T-stat per caging or rack system.
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