AN870 or MS6501 etc or TM902C for solder tip calib?

[MT]

Any significant difference in measurement between MS6501, AN870 and TM902C when used for calibrating solder tip temperature? Would the AN870 do? (Assuming DANIU FG-100 is the better one). Just trying to be dirt cheap!
https://www.banggood.com/HYELEC-MS6501-LCD-Display-Termostato-Digital-Thermometer-K-Type-Thermocouple-Termometer-p-991761.html?rmmds=detail-left-hotproducts__11&cur_warehouse=CN

https://www.banggood.com/TM902C-LCD-K-Type-Thermometer-Temperature-Meter-Probe-Thermocouple-Probe-p-1213752.html?rmmds=search&cur_warehouse=CN

https://www.banggood.com/ANENG-AN870-Auto-Range-Digital-Precision-Multimeter-19999-Counts-True-RMS-NCV-Ohmmeter-Tester-p-1268841.html?rmmds=cart_middle_products

Biigclive had problem with the K type on cables! Shouldnt it be possible to hack DANIU FG-100 to use a sensor on cables as well hack a jigg for the AN870 using short sensor like FG100?