First one is faster and costs less WU because it does the search server side and then returns only the results you want. Hence you load less data.
Second one returns everything within the constraints of your privacy settings and then filters the search results client side. So you load more data and then add the client-side overhead for the filtering.
As a general rule i avoid putting a search as a data source and opt to put data into a state.
Here’s something i posted that you may be interested in: