anyone use Eheim Jager Thermostat Heater?

[Pwny]

im looking to replace my stealth heaters and was looking at Eheim Jager Thermostat Heater. for my 240 gal tank im currently useing 2x 300 stealth heaters that are rated for like 90 gal tanks but the jager 300 says its rated for 264 gal tanks. are they really that much better or is this overrated?

 

[Kazarko]

yes, they are really good. I find they need calibrating because mine goes like 10F above the set temps out of the box. Made of really durable pyrex glass I believe and they are fully submersible.