Yep, Ive got the same one. I agree that it responds far too slowly. Apparently the SS tip can be removed so that the bead probe sits directly on top of the boiler in a puddle of heat transfer goop. Ill either PID my silvia or give that a shot after exams.
For the moment, going by rate of change and actual temperature isnt too bad. I think that someone drew an analogy with getting on a train:
Stock silvia = standing on the tracks, blindfolded, waiting for the train to hit you
Temperature surfing = jumping blindfolded from a bridge
Thermometer = jumping from a bridge without a blindfold
PID = getting into the first-class carriage at the platform, where your private butler greets you with champagne and caviar
Id love to hear which multimeter you end up getting. Does jaycar also have k-type probes?