Have to add my $0.01 here.
Remodeling my kitchen: I bought a Delta faucet, without much research.
It's a gooseneck, with a separate controller handle. The controller has
4 copper tubes protruding from its bottom, to which the faucet, sprayer,
hot, and cold supplies connect. The interntal connections, to faucet
and sprayer, are by "Quick connect" proprietary snap-up connections.
So I plug it in. Leaks *all over* from somewhere inside the controller.
Bring the controller back to Lowe's, exchange for another. The second
one worked. Happy enough ...
Until today, when I swapped the faucet over to the new sink. Now, the
quick-connects leak all over. It's going back to Lowe's. The
replacement will not be a Delta.