imho no software can measure ur temp accurately as it uses ur board and components sensor which is not always accurate. but any software that mention above can be use. if u try anyone of those and u find it not accurate then try another one. for example, if u use HWmonitor, u found ur load temp is only 20-30c then its not logic right. then try others until u find a more accurate software.

btw, im using everest and im very happy with it