Which do you prefer to fight against?
Champs who can only really be strategized against? (ex. annie, singed, tryndamere)
or
Champs who can also be outplayed by mechanics, but who have many tools outplay your mechanics right back? (ex riven, yasuo, vayne)
Note: the second type of champ still has champions and strategies which let you outplay them hard without letting them use their mechanics (funnily enough many of them come from the first category of champion), they just also give you some room to fight back mechanically if you choose to, albeit at a disadvantage.
Note 2: this vote doesn't cover every option on the spectrum obviously, I'm specifically interested in the preference of which edge case you'd rather deal with.