No need to be sorry!Originally Posted by Herpking
Not to de-value the information you may gain from your poll but the reality is not as simple as it may seem. Every set up and situation is different, no two are the same if you placed one of my set ups in your house it might work perfectly or it could go to He11 in a handbag.
Rheostats work best in very stable room temps. They are very few failures.
On/off type thermostats work best in semi stable room temps the often do not deal with large shifts well and very cool temps. Due to the nature of this type they tend to work well when there is indirect heat, or large thermal mass. Like found in a rack (tubs typically do not have the heat source attached to them but sit over the heat source. OR glass or similar material that is slow to heat and slow to cool.) The accuracy of the readout is often suspect, the three hydrofarm units I have tested all read more than 1.5ºF higher than correct. My Johnson is 1 degree low. IN many cases the probe position makes this a non issue anyway. They rarely fail.
Proportional units (VE, herpstat, ecozone, helix, habistat, and any others I may not have mentioned) all are the most versatile and handle most conditions the heat source is powerful enough for. They handle fairly quick drops and change to adjust to various conditions. The probes in my experience are the most accurate. The failure is infrequent.
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