You feel a cold chill go down your back.
A sense of dread overcomes you.
It's pretty much a DM only perspective, when the DM needs to communicate a character's experience directly to the player. In general, it should be avoided except where absolutely necessary, for example, when communicating to the player that they have been charmed and no longer have full control over the character. I find second person is too liberally used in alot of descriptive text in published modules. IMO, the DM really shouldn't be deciding how the PC feels unless some magic is involved and a saving throw has been failed.
based on that definition, I use 2nd person to relay what is affecting the PCs.
Thus, 3rd person is used as the general mode.
I assume that when a player speaks, he is speaking his intent of action, not his actual action, which may be blocked or prevented by something on my side.
Thus, a player might say: I charge across the field to confront the orcs
But, unbeknownst to the PC, there was a prepared spike trap in the middle of the field. So I relay that alteration of action in 2nd person:
You race across the field to face the orcs. You realize the pit trap only too late. Make a Reflex save to avoid the trap.
Also, on a technical note, quoted speech is not inherently 1st or 3rd person. It's the stuff outside the quotes that determines if it is 1st person, by use of the pronoun I, or implied I because the viewpoint has consistently been from the character's perspective.
This is not the same thing as not using quoted speech, versus summarizing what was said.
For example, asking for directions:
Janx asks the constable for directions to the inn (3rd person)
I ask the constable for directions to the inn (1st person)
Janx says to the constable, "Excuse me, can you direct me to an inn?" (3rd person)
I ask the constable, "Excuse me, can you direct to me to an inn?" (1st person)
The first 2 examples are not using direct or quoted speech, and can be done in either 1st or 3rd person. Some folks seem to be confusing not using quoted speech as 3rd person.
What's probably better to ask, is do you prefer to directly state what charcters are saying, or do you accept summaries.
Generally, I prefer to directly state what a PC says, Though sometimes for expediency, summaries are faster.