I use Visi Therm Stealth heaters exclusively…
I like their black / non glass design. Easy to hide, hard to break…
I like to glance at a heater and know if it turns on/off… but I hate having a little orange glowing dot in the tank when lights are out…
I do not use / trust the auto shut off feature… I have all the heaters & filters for each tank plugged into a common strip… so I can turn the heaters & filters for each tank off with the push of one button while doing maintenance…
I feel many heaters fail due to user error, and then the heater is blamed for the failure. I find 2 W per gallon is plenty big enough when the desired tank temp is 15*F or less higher than the room temperature. Using “more heater’ than this causes the heater to turn itself on/off more often, thus wearing out the feature that turns itself on/off, thus overheating the tank…
“more is better” isn’t always true…