... why saint pride and gladiator? that was noobie like... the 2 most annoying units particularly in the hands of a good player r queens and far snipers.
...wat?....... anyway i stucl to my far snip pwnage and ma queen pwnage...... cuz i use both of them to target specific units without being touched XD...... anybody who against me in my cap days should know....
Marines can get pwned by scout with the right micro.
I don't really have a most annoying unit but if I had to choose, I would say that BQ would be the most annoying, only because 1 BQ can sometimes be a bugger to kill and it 1 hit kills the majority of tier 1/2 units. Quite powerful if used well. (But again, it isn't very annoying because it is still not too hard a unit to kill or semi micro against.)
i think in addition to bqs sphinxes can be pretty annoying. Like just one sphinx can discourage and scouts/phantoms/saints/bq i want to send in to kill something like hovers. SOmetimes people mass medics behind a sphinx and u know the best way to crush the sphinx is romans so that gets annoying.