I think most people would say
Q/T= .5 seconds or less burst of Radar
I/O= burst of radar over .5 seconds
I think Q/T is probably about as much of a threat as POP, which your chances of getting hit by lightning are better than getting a Q/T or POP ticket. V1 and Whistler do well against Q/T. Belscort not so much, does it keep me from using my 9500ix in the city no not really. Do I think I think a $500 detector should pick Q/T up reliably absolutely.