While (very) fine shades of politeness may exist, I can't but mention that at least in Russian I am familiar with, this dialogue with aspects interchanged

• А на какой станции метро мне выйти?

• Лучше всего вам выходить на станции «Площадь восстания».

sounds almost exactly the same, and most speakers won't notice any difference at all, provided that this is a dialogue regarding a one-off trip.

However, if a daily routine is being discussed, only imperfective (выходить) will do.

While (very) fine shades of politeness may exist, I can't but mention that at least in the Russian I'm familiar with, this dialogue with aspects interchanged

• А на какой станции метро мне выйти?

• Лучше всего вам выходить на станции «Площадь восстания».

sounds almost exactly the same, and most speakers won't notice any difference at all, provided that this is a dialogue regarding a one-off trip.

However, if a daily routine is being discussed, only the imperfective (выходить) will do.