I guess my students find me a waza-affectionate person, since most techniques are my favourite at some point
. Limiting yourself to a "favourite" limits your options severely, since specific situations call for specific responses. On top of that, your favourite might be severe overkill in the real world, or unwise in certain contexts. Temakura for example, while a great technique, is not very wise when mobbed by three angry assailants, since you go prone yourself. In this case osoto would be much wiser, although I'd personally prefer sticking to daken (yeah, koppo and kosshi, really) until hostile numbers and eagerness to engage are somewhat reduced. UNLESS (for example) my assailants would be thaiboxing drugaddicts, than i'd probably change strategy. So, it all really depends on context. My favourite food might not be my favourite breakfast, so to speak.
Think about it, talking about "favourite technique" is really putting the gyaku-jime on what taijutsu really ought to be; versatile.