what is the best slippage value?

 
Hi.
What do you think is the best slippage value in the order command?
the metatrader samples show "3", but other people use "5".
does it depend on the broker? (response times, delays)
if we use slippage 3, it should be +-3, but I never noticed that I get a price in my favor.
if it is a sell, for example, it is always 0 to -3 difference.
in that case maybe we should use a smaller slippage, 0 or 1 for example?
Thanks
 
It's depends on your strategy. If your strategy is midterm and your timeframe is daily, maybe 5 pips slippage is okay. But if your strategy is scalping I don't think you can accept more than 1-2 pips slippage.
 
defenetly 1. if more - it`s a signal to recheck the experts logic.
Reason: