The thermistor is a core part of every 3D printer hotend. A gCreate E3D thermistor cartridge is a great blend of everything you would want in a thermistor and a strong structure for long-term usage.
The thermistor cartridge's exterior casing has a protective barrier of stainless steel with less oxidation than lesser thermistors made from copper. Each cartridge has a connection for simple component changeover at the hotend without requiring a complete re-wiring of your 3D printer. This thermistor cartridge is compatible with gMax 1.5+, gMax 1.5+ XT, and gMax 2.0.
If you want to guarantee the best 3D prints imaginable, using a gCreate thermistor cartridge is the right call.