How does different forms of EXISTS() affect performance in MS Sql Server?

I've been told that when checking for the existence of a row in a table, this will work: EXISTS(SELECT 1 FROM....) but that a "better" way in regards to speed performance of the query would be to use this: EXISTS(SELECT TOP(1) NULL FROM......) I've searched online for anything that references this comparison and the only information I can find says that this is a personal preference and there actually is no performance gain of one over the other. There's always the "case by case" aspect of a question like this, but in general, is there any performance gain from using the second implementation of EXISTS() over the first one?