I make a habit of responding to each and every recruiter.
The ones who send me jobs I am way overqualified for, or simply don't pay enough, I tell them my current compensation package with the advice to send relevant offers in the future.
Realistically though, every external recruiter I have talked to since I got into my current big tech company has been a waste of time. They can't usually touch my comp package, and only the other big tech companies are likely to be able to (or internal recruiters).
The ones who send me jobs I am way overqualified for, or simply don't pay enough, I tell them my current compensation package with the advice to send relevant offers in the future.
Realistically though, every external recruiter I have talked to since I got into my current big tech company has been a waste of time. They can't usually touch my comp package, and only the other big tech companies are likely to be able to (or internal recruiters).