I actually am thinking about getting Pandora one of the ones you linked Elizabeth. For Apollo, his CHE and UTH seem to be doing fine on keeping temps in the proper range. I was looking at the ones in my last post due to the no-heat factor.
They have individual preferences. Some will prefer to lay under a heat lamp verses under tank heating. I have one that will avoid the area when the Ceramic heat emitter is on. He has under tank heating, yet prefers to lay under a Hagen Exo Terra moonlight bulb.
Just an important detail that I feel is important to keep in mind. This is why providing more than one option is ideal and can help avoid running into problems.
A recent experience....
A friend calls me and asked if I can help her friend solve a leo eating mystery. 3 year old male housed in an Exo terra 36X18X12, UTH, 5 hides, water dish, etc. The room temperature was approximately 75f most of the time. He claims poor growth(suspected) and less than ideal appetite. After ruling out so many possibilities including a fecal and so on.
Hints provided by owner:
leo only spend about 10 minutes a day over the UTH area. NOT ENOUGH Head sticking out.
occasional partial off colored feces (as if it was sitting in the gut too long)
We tried adjusting ground temperature using a thermostat to no avail. Try changing hides- nothing. Well he may just prefer the heat coming from above. Not the first I have seen. I thought it would be ideal to add a second option for heating. The owner placed an exo terra moonlight 60 watt bulb
across from the UTH area. Lo and behold the leo has gained a few grams and appears to look better within a month so far. Just like one of mine, he prefers to warm up under the bulb instead.