Spyder Robotics. Why? Let's take the VE 300x2 vs the herpstat 2
Both are extremely similar in features. They offer two probes and two controlled outlets. They both offer safety shutoff and proportional heating. They both offer alarm warnings. They both offer night temp drop options.
Now from my research since I now own a herpstat 2, is that the herpstat can offer on/off, pulse, and dimming as heat options, humidity control ($55 optional probe required and takes a probe plug slot), or lighting timer control. The VE 300x2 does not offer dimming as far as I can tell.
These may be small but to me they were a very nice added option, especially the pulse versus dimming proportional control.
In reality they are very good products and either will serve you well.
So this really isn't a lot to compel why herpstat but... right now they are offering the herpstat redline series on sale (1 and 2) which means it is cheaper than a comparable VE product, especially if you get the herpstat 2
I recommend either the herpstat 2 or ve 300x2 if you have one enclosure with two heat sources so you can independently control and monitor the temp zone of each of them. Of course a tub with a sole heat source or a rack with one heat strip or identical heat strips might just need the single probe models so a herpstat 1 or ve 300 might do.
If you do go with the herpstat models, upgrade when you order it, to the metal probes for $1 per probe
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