Hardware temperature monitoring program, a recommendation?

Initially, I thought this thread was redundant. With the availability of laptop usage, however, it seems fair that there should be a standard for this particular field.

A few I came stumbling upon by myself: CPUthermometer, CoreTemp, RealTemp, Speccy or HW Monitor.
Of course, OCD dictates that I choose the most thorough solution. But the request is about an accurate temperature monitor with rather simple UI and controls. Put in eye-catching if you can.

Thanks Southperry.

Realtemp is the most accurate
HW monitor is the easiest