Lately I've been trying to cold crash and just pour in a little liquid with the yeast. But of course that takes some planning. If I'm running short of time, I might just dump the whole thing in, especially if the starter is a bit smaller. I haven't had a bad batch as a result of either. I typically try a little harder to plan with high gravity recipes where the starter is much larger (3-4 qts). Adding a gallon of starter can throw things way off, but still is not always that bad in the end. For really big beers, I've found that just using a yeastcake from a smaller beer is so much easier.