NanoOhm. No heat, they blow my 36V 150watts light bulbs twice, no heat on the MOSFET, no death affect like your MOSFETs under constant current. A thumb size TO-220 can produce 1.2kw of switching power.
YOUR MOSFETs (no apostrophe, idiot)?
What company do YOU make or design MOSFETs for?
Otherwise, it is you that is full of shit.