Haters!!!!!!!!!!!!!!.... oh... i mean heaters ;)

So there has been several debates on which heater is the best, titanium or glass.
Titanium heaters are build to last and go through anything. Titanium heaters are more costly and if not use appropriate it can damage your wall in your tank/chamber/sump. I would not recommend titanium over acrylic.

Glass can be fragile and if run dry can expose to air and might crack.  But the convenience of them are less expensive.

I had to try what the whole fuzz was about the Eheim Jager TruTemp Heater.  This heater is fully submersible, UL Certified.  It has a dial with readjustment ring that allows the user to calibrate the heater for a precise temperature reading.  If has a thermo safetycontrol and enable running dry protection, in other words heater will shut off when out of water.

The Eheim Jage Tru Temp has precise temperature.  It comes with 2 suction cups and a clamp.  So far it's been a couple of days and I been happy with the results.